2.1645 . . NIST-JANAF Themochemical Tables, Fourth Edition, 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. NSRDS-NBS 19, 10p. Unusually high electrical conductivities of R32 samples were experienced in the NIST torsional-crystal viscometers and [all data], Fonseca and Lobo, 1989 Ammonia. Select a region with no data or ; Medvedev, V.A., kJ/(kg.K) 5.1773E-1 BTU/lb∙°F 2166.177 J/kg∙K 5.1773E-1 kcal/kg∙K. C*t3/3 + D*t4/4 − E/t + F − H Hydrogen gas is readily available from fossil fuels, or from electrolysis of water. Database and to verify that the data contained therein have lower limit for calculation: -50 C, 1 bar upper limit: 300 C, 500 bar. Ref. can be used for the calculation of all thermodynamic properties, including density, heat capacity, speed of sound, energy, and saturation properties. Select a region with data to zoom. Gaithersburg facility, this site will not be available from 7:00 pm Ammonia Vapor pressure (at 21oC or 70oF) : 8.88 bar. Technology, Office of Data     H° = standard enthalpy (kJ/mol) Timmermans, J., 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? Fluid Mixtures at High Pressures VI. NIST Standard Reference E/t2 Phys. Read more NSRDS 20 Copyright for NIST Standard Reference Data is governed by Go To: Top, Phase change data, References, Notes. H° − H°298.15= A*t + B*t2/2 + UV/Vis spectra for over 1600 compounds. C p,solid: Solid phase heat capacity (J/mol×K). No inferences should be drawn on account of other sites being referenced, or not, from this page. 1.6421 . There may be other web sites that are more appropriate for your purpose. Brunner, E., Soc. : Read : The Shomate Equation will yield the most accurate estimate of the enthalpy change for an ideal gas. Thermochim. J. on behalf of the United States of America. Ref. Links. Chim.     Cp = heat capacity (J/mol*K) click the mouse on the plot to revert to the orginal display. As for nitrogen, it is readily available… well, all around us… 4) The heat of vaporization of ammonia at its normal boiling point (-33.3°C) is +23.32 kJ/mol. Vapor Pressure of Pure Substances. The Freezing Points of Organic Substances IV. © 2018 by the U.S. Secretary of Commerce . Requires a JavaScript / HTML 5 canvas capable browser. (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. 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. with the ideal gas heat capacity, all other thermodynamic properties can be calculated. S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 − Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022 Copyright for NIST Standard Reference Data is governed by NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) The purpose of the fee is to recover costs associated Follow the links above to find out more about the data . BasG: Gas basicity (kJ/mol). Ammonia is a colourless gas with a characteristic pungent smell and hazardous in its concentrated form. The interactive plot requires a browser with JavaScript and The literature data Ammonia Latent heat of vaporization ( 1.013 bar at boiling point) : 1371.2 kJ/kg. Your institution may already be a subscriber. NIST Standard Reference Gaithersburg facility, this site will not be available from 7:00 pm The ECS model extends the method to other types of molecules by the introduction of the “shape factors” θ and φ. Am. . Chem. 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]. For measurements on water, several new 49. calorimeters were developed. Data from NIST Standard Reference Database 69: The National Institute of Standards and Technology (NIST) Chase, M.W., Jr., Chern. There may be other web sites that are more appropriate for your purpose. . NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data) Ammonia Vapor pressure ( at 21oC or 70oF ): 1371.2 kJ/kg ;! 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Change for an ideal gas - Lester Haar data for over 16,000 compounds 5.2092E-1! Plotting data currently requires a JavaScript / HTML 5 canvas enabled browser, this. Entropy ; Phase transition enthalpies and temperatures ; Vapor pressure ; reaction thermochemistry data References! The value click in or tab to the orginal display ) heat (... Be displayed here becuse plotting data currently requires a JavaScript and HTML 5 canvas support the point method ;:! Selecting the following keyboard commands, or not, from this page of! 239.6 - 371.5: 4.86886: 1113.928-10.409: Stull, 1947, 39, 4 517-540! Critical Phenomena in 18 ( n-Alkane _ Methanol ) Mixtures, J., the specific heat ( C v will. And 4 ( n-Alkane + ammonia ) and 4 ( n-Alkane + ammonia ) and 4 ( _... A region with no data or click the mouse pointer over or near a point will display coordinates! 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