ChIN简介页:CODATA Key Values for Thermodynamics (CODATA推荐的主要化学物质热力学标准数据值)
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CODATA Key Values for Thermodynamics (CODATA推荐的主要化学物质热力学标准数据值)


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     The Committee on Data for Science and Technology (CODATA) has conducted a project to establish internationally agreed values for the thermodynamic properties of key chemical substances. This table presents the final results of the project. Use of these recommended, internally consistent values is encouraged in the analysis of thermodynamic measurements, data reduction, and preparation of other thermodynamic tables. The table includes the standard enthalpy of formation at 298.15 K, the entropy at 298.15 K, and the quantity H ° (298.15 K)-H °(0). A value of 0 in theDfH ° column for an element indicates the reference state for that element. The standard state pressure is 100000 Pa (1 bar). See the reference for information on the dependence of gas-phase entropy on the choice of standard state pressure.


Cox, J. D., Wagman, D. D., and Medvedev, V. A., CODATA Key Values for Thermodynamics, Hemisphere Publishing Corp., New York, 1989.


Summary by 李晓霞 on 2002-04-03

Last updated by 李晓霞 on 2002-07-04

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