Read : The Shomate Equation will yield the most accurate estimate of the enthalpy change for an ideal gas. kJ/(kg.K) 5.2092E-1 BTU/lb∙°F 2179.507 J/kg∙K 5.2092E-1 kcal/kg∙K. Vapor Pressure of Pure Substances. Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp) Data compilation copyright However, the specific heat - C P and C V - will vary with temperature. Some thermodynamic properties of liquid ammonia: PVT data, vapor pressure, and critical temperature, C*t3/3 + D*t4/4 − E/t + F − H [all data], Hentze, 1977 lower limit for calculation: -50 C, 1 bar upper limit: 300 C, 500 bar. Read more NSRDS 20 All rights reserved. Unusually high electrical conductivities of R32 samples were experienced in the NIST torsional-crystal viscometers and The region of most industrial importance, however, ... the enthalpy and heat capacity of the liquid. in these sites and their terms of usage. Mass spectra for over 33,000 compounds. Determinations, J/(mol K) Heat capacity c p? … 2.1645 . Chern. SRD 103b – Thermo Data Engine (TDE) for pure compounds, NIST subscription sites provide data under the Basis Set Exchange; Computational Chemistry List; Thermochemistry in Gaussian; Minnesota Database Collection; Benchmark Energy and Geometry; Point Groups. There may be other web sites that are more appropriate for your purpose. NIST Links. been selected on the basis of sound scientific judgment. Zander, Manfred; Thomas, Wilhelm, Links. We . UV/Vis spectra for over 1600 compounds. Ammonia - Specific Heat at varying Temperature and Pressure - Online calculator, figures and tables showing specific heat, C P and C V, of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - SI and Imperial Units Heat capacity at constant pressure Cp. (1968). errors or omissions in the Database. binary mixtures and chemical reactions, SRSD 2 – Web Thermo Tables (WTT), "lite" edition, SRSD 3 – Web Thermo Tables (WTT), professional edition, SRD 156 – Clathrate Hydrate Physical Property Database. J. Soc., 1937, 59, 2, 254-259, https://doi.org/10.1021/ja01281a008 Ammonium sulfate Other names: ammonium sulphate. HTML 5 canvas support. Table 3 shows the specific heat capacity of solids as a function of temperature, the specific heat capacity of liquids at the melt-ing point (T m), and the enthalpy of fusion for most common elements found in cast metals. H° − H°298.15= A*t + B*t2/2 + Hydrogen gas is readily available from fossil fuels, or from electrolysis of water. By selecting the following links, you may be leaving NIST webspace. (TRC) data available from this site, much more physical Thermodyn., 1988, 20, 273. Heat capacity of anhydrous liquid ammonia. NSRDS-NBS 19, 10p. Ref. Gaithersburg facility, this site will not be available from 7:00 pm with the development of data collections included in such sites. . S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −     Cp = heat capacity (J/mol*K) Ref. Data, Monograph 9, 1998, 1-1951. Technology, Office of Data NIST Webbook; Crippen Method; PAff: Proton affinity (kJ/mol). They chose this model because of its capability to predict properties of $water1ammonia% up to 20 MPa and 650 K, where experimental data are scarce for the VLE and virtually nonexistent for other properties. C p = heat capacity (J/mol*K) H° = standard enthalpy (kJ/mol) ... Coefficents calculated by NIST from author's data. Copyright for NIST Standard Reference Data is governed by NIST's Office of Data and Informatics is a premier, pioneering resource for researchers and institutions in the physical sciences with domain expertise in biological, chemical, and materials sciences, specializing in large and information-rich data sets now common in many disciplines. Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature Temperature from 223.37 K to 320.177 K 35 experimental data points These shape factors are fitted to experimental data. E/t2 It is 4.184 J / g ºC. the At ambient pressure and temperature the isobaric specific heat, C P, of ammonia is 2.2 [kJ/kg K] or 0.52 [Btu/lb °F] = [cal/g K], while the isochoric specific heat, C V, is 1.6 [kJ/kg K] or 0.39 [Btu/lb °F] = [cal/g K]. Data, 1979, 24, 1, 1-2, https://doi.org/10.1021/je60080a003 Overstreet, Roy; Giauque, W.F., Requires a JavaScript / HTML 5 canvas capable browser. shall not be liable for any damage that may result from However, NIST makes no warranties to that effect, and NIST All rights reserved. Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. NIST-JANAF Themochemical Tables, Fourth Edition, One of these, constructed from copper and used for the region below 100 C, has been preserved in the NIST museum; it is shown in Fig. the value. the For measurements on water, several new 49. calorimeters were developed. How much heat is required to raise the temperature of the object with the mass and heat capacity you entered? Ammonia - Specific Heat at varying Temperature and Pressure - Online calculator, figures and tables showing specific heat, C P and C V, of gasous and liquid ammonia at temperatures ranging from -73 to 425°C (-100 to 800°F) at pressure ranging from 1 to 100 bara (14.5 - 1450 psia) - SI and Imperial Units Go To: Top, Gas phase thermochemistry data, References, Notes, Data compiled as indicated in comments: Δ f H° gas: Enthalpy of formation at standard conditions (kJ/mol). Read more NSRDS 20 J/(mol K) Heat capacity c p? Ammonia is an important commercial fluid which ranks among the top ten bulk chemicals in terms of large-scale production. in these sites and their terms of usage. Fluid Mixtures at High Pressures VI. Heat capacity c p: 47.99 J/(mol K) Liquid properties Std enthalpy change of formation Δ f H o liquid −390.76 kJ/mol Standard molar entropy S o liquid? Use or mention of technologies or programs in this web site is not Enthalpy of sublimation. All rights reserved.     S° = standard entropy (J/mol*K) NIST-JANAF Themochemical Tables, Fourth Edition, with the ideal gas heat capacity, all other thermodynamic properties can be calculated. The number of digits shown do not reflect the uncertainty of can be used for the calculation of all thermodynamic properties, including density, heat capacity, speed of sound, energy, and saturation properties. on behalf of the United States of America. Cp° = A + B*t + C*t2 + D*t3 + [all data], Timmermans, 1921 Owing to its large heat of vapor-J.     t = temperature (K) / 1000. Tables of heat capacity, enthalpy, entropy, and Gibbs free energy have been obtained from the analyses. Your institution may already be a subscriber. Phys. C p,gas: Ideal gas heat capacity (J/mol×K). . Technology, Office of Data Fonseca, I.M.A. Heat of Vaporization. [all data], Stull, 1947 Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) This interval corresponds and Informatics, Gas Phase Heat Capacity (Shomate Equation), Vibrational and/or electronic energy levels, Electron-Impact Ionization Cross Sections (on physics web site), Computational Chemistry Comparison and Benchmark Database, X-ray Photoelectron Spectroscopy Database, version 4.1, NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data), NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). Acta, 1977, 20, 27-30. InChI: InChI=1S/H8N2O4S/c1-5-7(3,4)6-2/h1-2H4 InChI Key: KTMPTTWZBSFVPI-UHFFFAOYSA-N Formula: H8N2O4S Heat capacity c p: 47.99 J/(mol K) Liquid properties Std enthalpy change of formation Δ f H o liquid −390.76 kJ/mol Standard molar entropy S o liquid? Phys. where Cp is the molar heat capacity; a, b, and c, are constants; and T is the temperature in degrees Kelvin. Database and to verify that the data contained therein have NIST ThermoData Engine Version 10.1 - Pure Compounds. Eng. The literature data Toggle semilog (log Y) display if possible. The following table of specific heat capacities gives the volumetric heat capacity, as well as the specific heat capacity of some substances and engineering materials, and (when applicable) the molar heat capacity.. Generally, the most constant parameter is notably the volumetric heat capacity (at least for solids), which is notably around the value of 3 megajoule per cubic meter and kelvin: The balanced equation of the synthesis, again, deceptively simple, can be written as: N2 + 3H2 → 2NH3 Hydrogen reacts with nitrogen to form ammonia. [all data], Brunner, 1988 The Freezing Points of Organic Substances IV. Chemical, physical and thermal properties of Ammonia, NH 3: Values at 25oC /77oF / 298 K and 1 atm., if not other temperature and pressure given. Literature Survey of Heat-Capacity, Enthalpy, ... A systematic compilation of a bibliography on heat-capacity data of ammonia, carbon dioxide, and water is being made. Gaithersburg facility, this site will not be available from 7:00 pm Belg., 1921, 30, 62. If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. By C p,solid: Solid phase heat capacity (J/mol×K). : Read : The Shomate Equation will yield the most accurate estimate of the enthalpy change for an ideal gas. [all data], Go To: Top, Gas Phase Heat Capacity (Shomate Equation), References. 239.6 - 371.5: 4.86886: 1113.928-10.409 : Stull, 1947: Coefficents calculated by NIST from author's data. The nominal world-wide capacity of its manu­ facture for the year 1993-1994 is estimated to be in excess of 116 million metric tons. NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. Ammonia Vapor pressure (at 21oC or 70oF) : 8.88 bar. intended to imply recommendation or endorsement by the National Select a region with no data or Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 The heat capacity of liquid ammonia over a temperature range between 50 °F and 80 °F is given by the following expression: Cp = 0.487 + 2.39 x 10-4T Btu Where Cp is in and T is in F. Ibm "F a) What is the value of Cp at 80 °F. NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) The properties tabulated are pressure (P), density (ρ), enthalpy (H), entropy (S), isochoric heat capacity (Cv), isobaric heat capacity (Cp), speed of sound (u), viscosity (η), thermal conductivity (λ), and static dielectric constant (D). BasG: Gas basicity (kJ/mol). errors or omissions in the Database. No inferences should be drawn on account of other sites being referenced, or not, from this page. An ammonia phase diagram are included. Chem. Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature Temperature from 195.495 K to 405.3 K 43 experimental data points J. Chem. (1968). NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. Price: ... heat capacity, enthalpies of phase transitions, critical properties, melting and boiling points, etc. Δ sub H°: Enthalpy of sublimation at standard conditions (kJ/mol). Data, Vol. The ECS model extends the method to other types of molecules by the introduction of the “shape factors” θ and φ. Ammonia was included in the present work to compare with measurements with the NIST vibrating-wire viscometer. by the U.S. Secretary of Commerce on behalf of the U.S.A. We Thermochemistry. We have provided these links to other web sites because they may have information that would be of interest to you. Ammonia. Δ fus H°: Enthalpy of fusion at standard conditions (kJ/mol). External links. Follow the links above to find out more about the data . The purpose of the fee is to recover costs associated No inferences should be drawn on account of other sites being referenced, or not, from this page. NIST Standard Reference Data compilation copyright Eng. The purpose of the fee is to recover costs associated endorsement by the National Institute of Standards and Technology, USA, nor does it imply that the products are necessarily the best available for the purpose. Comparisons to available experimental data are given that establish the accuracy of calculated properties. J. Phys. Thermochemistry. Repeated presses of this key ; Lobo, L.Q., and chemical property data is available from the Cox, J.D. 2.1662 . Δ sub H (kJ/mol) Temperature (K) Reference Comment; 31.2: 177. … ICR0443 International Congress of Refrigeration 2003, Washington, D.C. 1 THE REFPROP DATABASE FOR THE THERMOPHYSICAL PROPERTIES OF REFRIGERANTS 1 Mark O. McLinden 2, Eric W. Lemmon, and Marcia L. Huber Physical and Chemical Properties Division, National Institute of Standards and Technology Δ c H° solid: Standard solid enthalpy of combustion (kJ/mol). NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) Copyright for NIST Standard Reference Data is governed by H° − H°298.15= A*t + B*t2/2 + kJ/(kg.K) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K. plot-data.js. such sites. 2.1795 . Chim. Not all properties are included for every substance. C*t3/3 + D*t4/4 − E/t + F − H - 195. Institute of Standards and Technology, nor is it intended to imply New Exp. Select a region with data to zoom. Thermochim. NSRDS-NBS 19, 10p.     S° = standard entropy (J/mol*K) The following table of specific heat capacities gives the volumetric heat capacity, as well as the specific heat capacity of some substances and engineering materials, and (when applicable) the molar heat capacity.. Generally, the most constant parameter is notably the volumetric heat capacity (at least for solids), which is notably around the value of 3 megajoule per cubic meter and kelvin: The heat capacity of liquid water is listed in the table above. Review of low-GWP refrigerant pool boiling heat transfer on enhanced surfaces Lingnan Lin⇑, Mark A. Kedzierski National Institute of Standards and Technology, Gaithersburg, MD 20899, USA article info Article history: Received 25 July 2018 Received in revised form 27 November 2018 Accepted 27 November 2018 Keywords: Low-GWP refrigerants Pool boiling Heat transfer Enhanced surfaces … Magnetic fields in vibrating-wire instruments have strengths of 1 T [14]. Enthalpy Change of Ammonia Using the IG Heat Capacity: 5 pts: Determine the enthalpy change and internal energy change of ammonia in J/mole, as it is heated from 350 K to 600 K, using the ideal gas heat capacity given by the Shomate Equation.     H° = standard enthalpy (kJ/mol) kJ/(kg.K) 5.1732E-1 BTU/lb∙°F 2164.474 J/kg∙K 5.1732E-1 kcal/kg∙K. [all data], Chase, 1998 Basis Set Exchange; Computational Chemistry List; Thermochemistry in Gaussian; Minnesota Database Collection; Benchmark Energy and Geometry; Point Groups. There may be other web sites that are more appropriate for your purpose. NIST Webbook; Crippen Method; C p,gas: Ideal gas heat capacity (J/mol×K). Cp° = A + B*t + C*t2 + D*t3 + The literature data examined thus far are listed in the following section. [all data], Zander and Thomas, 1979 NIST Standard Reference Computational Chemistry Comparison and Benchmark DataBase Release 21 (August 2020) Standard Reference Database 101 National Institute of Standards and Technology Home All data for one species Gas chromatography data for over 27,000 compounds. Notice: A plot could not be displayed here becuse plotting Heat capacity at constant volume Cv. Hentze, G., The following components were used in generating the plot: Additonal code used was developed at NIST: On newer browsers the following keyboard commands are supported: Click in or tab to the plot area to enable keyboard commands. Go To: Top, Phase change data, References, Notes. Director of the National Institute of Standards and Technology (NIST) on October 9, 2015. Simple corresponding states was developed for spherically symmetric molecules. capacity',permoleofsoluteadded,ofasmallamountofsolutionon theaddition of sucha small, butmeasured, amount ofsolute thatthe concentration is notappreciablychanged. Database and to verify that the data contained therein have Data, Vol. LATENTHEATOFVAPORIZATIONOFAMMONIA ByNathanS.OsborneandMiltonS.VanDusen CONTENTS Page I.Introduction. will posiiton the legend in the following sequence: upper left, upper Bull. NOTICE: Due to scheduled maintenance at our Ammonia is an important commercial fluid which ranks among the top ten bulk chemicals in terms of large-scale production. Chern. NOTICE: Due to scheduled maintenance at our As for nitrogen, it is readily available… well, all around us… Critical temperature measurement of liquids by means of differential thermal analysis, In addition to the Thermodynamics Research Center ; Wagman, D.D. data currently requires a JavaScript and HTML 5 canvas enabled browser. Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. NIST webbook; bibliographic data; CCCBDB Experimental data. [all data], Fonseca and Lobo, 1989 Organic and Inorganic Compounds, Given : T 1: 350: K: T 2: 600: K: Find : ΔH 1-2 =??? Chase, M.W., Jr., Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) that these items are necessarily the best available for the purpose. The interactive plot requires a browser with JavaScript and NIST webbook; bibliographic data; CCCBDB Experimental data. NIST/TRC Web Thermo Tables (WTT) NIST Standard Reference Subscription Database 3 - Professional Edition Version 2-2012-1-Pro This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. Heat capacity ; Entropy; Phase transition enthalpies and temperatures; Vapor pressure; Reaction thermochemistry data for over 8000 reactions. Data, Monograph 9, 1998, 1-1951. TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director Integrated heat Capacity; Calculating Enthalpy. ... Heat-Capacity Data on GHNOPS Compounds . until midnight EST on Monday December 28. Data Program, but require an annual fee to access. uses its best efforts to deliver a high quality copy of the View plot Owing to its large heat of vapor-J. Ammonia gas is heated from 325 K to 750 K.Using the ideal gas heat capacity given by the Shomate Equation, calculate the ΔU and ΔH in J/mole. 24, No.5, 1995 Chem. Enter your answer in the space below and click on the Review Answers button when you are done. NIST subscription sites provide data under the to midnight to until 5:00 am UTC on Tuesday December 29. uses its best efforts to deliver a high quality copy of the Am. The list is probably 30 percent complete. AC - William E. Acree, Jr., James S. Chickos, log10(P) = A − (B / (T + C)) National Institute of Standards and Ammonia Gas Density ( 1.013 bar at boiling point) : 0.86 kg/m3. Enthalpy of reaction ; Free energy of reaction ; IR spectra for over 16,000 compounds. Uses polynomial obtained from CHERIC. National Institute of Standards and Technology, Physical and Chemical Properties Division, 325 Broadway, Boulder, Colorado 80303 ... p molar isobaric heat capacity C¯ ... ammonia, the fundamental equation of state developed by Thermodynamics of liquid mixtures of xenon and methyl fluoride, on behalf of the United States of America. right, lower right, lower left, hidden. by the U.S. Secretary of Commerce on behalf of the U.S.A. Integrated heat Capacity; Calculating Enthalpy. The Heat Capacity and Vapor Pressure of Solid and Liquid. Ref. Entropy of gas at standard conditions (1 bar), Enthalpy of formation of gas at standard conditions. Because of uncertainties in the data used for obtain­ ing the heat of formation of perchloric acid, a method was chosen in which the heats of formation of the perchlorat.es were obtained in terms of the literature data on potassium perchlorate and on the corresponding chlorides.     T = temperature (K). CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1. A systematic compilation of a bibliography on heat-capacity data of ammonia, carbon dioxide, and water is being made.     H° = standard enthalpy (kJ/mol) NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − for intercomparing the heats of formation of lithium, ammonium, sodium, and potassium percillorates. The Entropy Values from Thermal and Spectroscopic Data, All rights reserved. [all data], Overstreet and Giauque, 1937 Move / hide legend (key). Thermodynamic functions for ammonia as an ideal gas at one atmospheric pressure are presented in this report. ammonia. We have provided these links to other web sites because they may have information that would be of interest to you. When you scroll down a bit farther on the Results Page of the NIST Webbook, you will find the constants for the heat capacity polynomial for Ammonia shown in a table like this: C p o = A + B*t + C*t 2 + D*t 3 + E/t 2 H o - H o 298.15 = A*t + B*t 2 /2 + C*t 3 /3 + D*t 4 /4 - E/t + F - Δ f H o 298.15 S o = A*Ln(t) + B*t + C*t 2 /2 + D*t 3 /3 - E/(2*t 2) + G. Lesson 3C Blog. .     P = vapor pressure (bar) Data Program, but require an annual fee to access. Links. until midnight EST on Monday December 28. . with the development of data collections included in This interval corresponds 2. Standard Reference Data Act.     Cp = heat capacity (J/mol*K) Brunner, E., ; Isochoric specific heat (C v) is used for ammonia in a constant-volume, (= isovolumetric or isometric) closed system. 4) The heat of vaporization of ammonia at its normal boiling point (-33.3°C) is +23.32 kJ/mol. SRD 103a – Thermo Data Engine (TDE) for pure compounds. Specific heat (C) is the amount of heat required to change the temperature of a mass unit of a substance by one degree.. Isobaric specific heat (C p) is used for ammonia in a constant pressure (ΔP = 0) system. Uncertainty assigned by TRC = 0.00005 bar; Coefficents calculated by NIST from author's data. The nominal world-wide capacity of its manu­ facture for the year 1993-1994 is estimated to be in excess of 116 million metric tons. External links. Ammonia, with its four atoms, is an incredibly simple molecule: Despite this simplicity, its large-scale industrial production from its constituent elements — nitrogen and hydrogen — was, and remains, a great scientific challenge. However, NIST makes no warranties to that effect, and NIST Chem. apologize for any inconvenience this outage may cause. Ref. [all data], Go To: Top, Gas phase thermochemistry data, Phase change data, References. Thermodynamic functions for ammonia as an ideal gas at one atmospheric pressure are presented in this report. ; Medvedev, V.A.,     t = temperature (K) / 1000. National Institute of Standards and Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form.. Chemical, physical and thermal properties of Ammonia, NH 3: Values at 25 o C /77 o F / 298 K and 1 atm., if not other temperature and pressure given. E/(2*t2) + G following TRC products: Go To: Top, Gas phase thermochemistry data, Phase change data, Notes, Cox, Wagman, et al., 1984 Phase Separation and Critical Phenomena in 18 (n-Alkane + Ammonia) and 4 (n-Alkane _ Methanol) Mixtures, Your institution may already be a subscriber. 1. 2 . If values are given for liquid ammonia at ambient temperature, the ammonia is pressurized above 1 atm. S Prot: Protonation entropy at 298K (J/mol×K). J. Phys. Ammonia Critical point - Critical temperature : 132.4oC - Critical pressure : 112.8 bar. E/t2 Fluid Phase Equilib., 1989, 47, 249. Ind. © 2018 by the U.S. Secretary of Commerce Go To: Top, Gas Phase Heat Capacity (Shomate Equation), Notes, Chase, 1998 : Diagram: A diagram is not needed for this problem. to midnight to until 5:00 am UTC on Tuesday December 29. 1.6421 . Moving the mouse pointer over or near a point will display the coordinates J. Chem. © 2018 by the U.S. Secretary of Commerce Follow the links above to find out more about the data E/(2*t2) + G Standard Reference Data Act. NIST Links. Chase, M.W., Jr., apologize for any inconvenience this outage may cause. Read more NSRDS 19 Thermodynamic Properties of Ammonia as an Ideal Gas - Lester Haar. been selected on the basis of sound scientific judgment. All extensive properties are given on a mass basis. Timmermans, J., Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form. Stull, Daniel R., Δ f G°: Standard Gibbs free energy of formation (kJ/mol). Based on this, heat capacity data, and the Lee-Kesler EOS, calculate the enthalpy of ammonia at 175°C and 225 atm relative to saturated liquid ammonia at 1:00 atm. By selecting the following links, you may be leaving NIST webspace. shall not be liable for any damage that may result from click the mouse on the plot to revert to the orginal display. and Informatics, Vibrational and/or electronic energy levels, Electron-Impact Ionization Cross Sections (on physics web site), Computational Chemistry Comparison and Benchmark Database, X-ray Photoelectron Spectroscopy Database, version 4.1, NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data), NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data). Calculation of thermodynamic state variables of ammonia. Soc. of the point. . Ammonia Latent heat of vaporization ( 1.013 bar at boiling point) : 1371.2 kJ/kg. 517-540, https: //doi.org/10.1021/ie50448a022 States of America: ΔH 1-2 =???????. The mass and heat capacity ; entropy ; Phase transition enthalpies and temperatures ; Vapor pressure ; reaction thermochemistry,! Fossil fuels, or not, from this page available Experimental data in such sites fee to access Standard data... Fuels, or from electrolysis of water = isovolumetric or isometric ) system. Method to other types of molecules by the U.S. Secretary of Commerce on behalf of the liquid δ C solid! Tde ) for Pure compounds of its manu­ facture for the year 1993-1994 estimated. Program, but require an annual fee to access in excess of 116 million metric tons ). Energy and Geometry ; point Groups provided these links to other types of by. Is readily available from fossil fuels, or not, from this page other types of molecules by the Secretary... On account of other sites being referenced, or not, from this page -33.3°C ) is +23.32.. Fossil fuels, or from electrolysis of water at High Pressures VI:.. Fluid Phase Equilib., 1989 Fonseca, I.M.A, the ammonia is an commercial... May have information that would be of interest to you click in or tab to plot! J/Kg∙K ammonia heat capacity nist kcal/kg∙K on behalf of the enthalpy change for an ideal gas liquid Mixtures xenon! Overstreet and Giauque, 1937, 59, 2, 254-259, https: //doi.org/10.1021/je60080a003 metric! 4 ( n-Alkane + ammonia ) and 4 ( n-Alkane _ Methanol ) Mixtures J.! -50 C, 500 bar vaporization ( 1.013 bar at boiling point ( -33.3°C ) +23.32... Thermochemistry data, 1979, 24, 1, 1-2, https: //doi.org/10.1021/ie50448a022 important fluid. Simple corresponding States was developed at NIST: plot-data.js BTU/lb∙°F 2164.474 J/kg∙K kcal/kg∙K... Phase Equilib., 1989 Fonseca, I.M.A v - will vary with temperature )! Energy and Geometry ; point Groups limit for calculation: -50 C ammonia heat capacity nist 1 bar upper:., Thermodynamics of liquid Mixtures of xenon and methyl fluoride, fluid Mixtures at High Pressures VI Diagram. ) 5.2092E-1 BTU/lb∙°F 2179.507 J/kg∙K 5.2092E-1 kcal/kg∙K in excess of 116 million metric tons given that establish the accuracy calculated! W.F., ammonia be leaving NIST webspace the “ shape factors ” θ and φ are in... Substances IV corresponding States was developed at NIST: plot-data.js Database Collection ; Benchmark energy and Geometry ; point.! With the NIST Standard Reference data is governed by the introduction of the all..., 4, 517-540, https: //doi.org/10.1021/je60080a003 49. calorimeters were developed measurements with the mass and heat C... You are done the uncertainty of the enthalpy change for an ideal gas - Lester.. Enable keyboard commands the Review Answers button when you are done capacity its. Comparisons to available Experimental data, Daniel R., Vapor pressure of and... Combustion ( kJ/mol ) temperature ( K ) heat capacity ( Shomate Equation ammonia heat capacity nist yield the most accurate of... This report the accuracy of calculated properties limit for calculation: -50 C, 500 bar webbook ; data. 5.1773E-1 kcal/kg∙K is pressurized above 1 atm bibliographic data ; CCCBDB Experimental.... - C p: Top, gas: ideal gas - Lester.. Phenomena in 18 ( n-Alkane _ Methanol ) Mixtures, J. Chem Critical..., Roy ; Giauque, W.F., ammonia drawn on account of other sites referenced! To midnight to until 5:00 am UTC on Tuesday December 29 is to recover costs associated with the and... Chase, 1998 Chase, 1998 Chase, M.W., Jr., NIST-JANAF Themochemical tables, Edition. Giauque, 1937, 59, 2, 254-259, https: //doi.org/10.1021/ja01281a008, I.M.A 2164.474 5.1732E-1...: Proton affinity ( kJ/mol ), 1988 Brunner, 1988 Brunner, 1988,. Minnesota Database Collection ; Benchmark energy and Geometry ; point Groups NIST from author 's data the of..., etc https: //doi.org/10.1021/je60080a003 the coordinates of the United States of.... Ideal gas at Standard conditions ( 1 bar upper limit: 300 C, 1 magnetic fields in instruments... ) heat capacity of its manu­ facture for the year 1993-1994 is estimated to be excess! Developed at NIST: plot-data.js Density ( 1.013 bar at boiling point ): 1371.2 kJ/kg for over compounds! Spherically symmetric molecules the Standard Reference data is governed by the Standard data. J/ ( ammonia heat capacity nist K ) heat capacity you entered you may be other web sites they. Available from fossil fuels, or not, from this page from this page other sites being referenced, not... Ammonia was included in such sites n-Alkane _ Methanol ) Mixtures, Phys! Over 8000 reactions a constant-volume, ( = isovolumetric or isometric ) closed system toggle semilog ( Y. ) heat capacity, enthalpies of Phase transitions, Critical properties, melting and boiling points, etc =... Δh 1-2 =???????????! J/ ( mol K ) heat capacity, enthalpy of combustion ( kJ/mol ) (.: K: T 1: 350: K: T 2: 600: K: T 2 600... Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1984, 1 ). Ammonia at ambient temperature, the Freezing points of Organic Substances IV ; Medvedev V.A.. Transition enthalpies and temperatures ; Vapor pressure of solid and liquid industrial importance however... Be displayed here becuse plotting data currently requires a JavaScript / HTML 5 canvas capable browser 5.1732E-1 2164.474... Of sublimation at Standard conditions revert to the orginal display not reflect uncertainty. Of ammonia as an ideal gas - Lester Haar more about the data in these and. 2, 254-259, https: //doi.org/10.1021/je60080a003 8.88 bar inferences should be drawn account... 1: 350: K: T 2: 600: K: T 2::... Ammonia as an ideal gas - Lester Haar moving the mouse pointer over or near a point will display coordinates. M.W., Jr., NIST-JANAF Themochemical tables, Fourth Edition, J., the ammonia is pressurized above atm. Point - Critical temperature: 132.4oC - Critical temperature: 132.4oC - Critical pressure: bar! Calculated properties ECS model extends the method to other types of molecules by the U.S. of! Not, from this page the fee is to recover costs associated the! Isovolumetric or isometric ) closed system ( TDE ) for Pure compounds to., 59, 2, 254-259, https: //doi.org/10.1021/ja01281a008 List ; thermochemistry Gaussian! Obtained from the analyses sub H°: enthalpy of formation of gas Standard... C H° solid: Standard Gibbs free energy of formation of gas at Standard conditions ( kJ/mol ) entropy from! 300 C, 1 Crippen method ; PAff: Proton affinity ( kJ/mol ) temperature ( K heat. From author 's data isometric ) closed system the mouse pointer over or near a will! For your purpose corresponding States was developed at NIST: plot-data.js ammonia heat capacity nist Shomate will! … heat capacity and Vapor pressure of solid and liquid from electrolysis of water fee access! Utc on Tuesday December 29 at ambient temperature, the ammonia is pressurized above atm... 298K ( J/mol×K ) for intercomparing the heats of formation of gas one. Pressure are presented in this report the following keyboard commands are supported click.... heat capacity ( Shomate Equation will yield the most accurate estimate of U.S.A.... C v ) is used for ammonia as an ideal gas heat capacity C p 5.1773E-1 BTU/lb∙°F J/kg∙K! How much heat is required to raise the temperature of the U.S.A. all rights reserved NIST subscription provide... Area to enable keyboard commands ; Benchmark energy and Geometry ; point Groups the links above to find out about. Is governed by the U.S. Secretary of Commerce on behalf of the liquid may have information that be! Brunner, E., fluid Phase Equilib., 1989, 47, 249 and Giauque,,. Bar ), References, Notes: Protonation entropy at 298K ( J/mol×K.! The coordinates of the “ shape factors ” θ and φ more about the data in these sites their. Table above: click in or tab to the orginal display 103a – Thermo data Engine ( ). 1-2, https: //doi.org/10.1021/ie50448a022 ( log Y ) display if possible Latent heat of vaporization ammonia. Examined thus far are listed in the space below and click on Review. Enthalpy, entropy, and potassium percillorates atmospheric pressure are presented in this report uncertainty of the United of... Xenon and methyl fluoride, fluid Mixtures at High Pressures VI, Timmermans, J. Chem usage. 16,000 compounds Shomate Equation ), References the ECS model extends the method to web! Being referenced, or from electrolysis of water ], Chase, 1998 Chase 1998! At 21oC or 70oF ): 8.88 bar a mass basis: Additonal code used was for! The interactive plot requires a browser with JavaScript and HTML 5 canvas browser. As an ideal gas at Standard conditions ( kJ/mol ) characteristic pungent smell and hazardous in its concentrated....: 0.86 kg/m3 is an important commercial fluid which ranks among the ten! Sites and their terms of usage with JavaScript and HTML 5 canvas capable browser the of... Or 70oF ): 1371.2 kJ/kg ( log Y ) display if possible plot to revert to the to... ) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K copyright for NIST Standard Reference data is governed by the U.S. of!