恒温下熵变的计算（③） S.J.T.0. Phase Transformation and Applications dp ap s-s-s=-〔 EX:solid the volumetric thermal expansion coefficient, For a change in pressure from 1 atm to 10 atm at constant temperature.The molar volume and volumetric thermal expansion coefficient are constant over the pressure range of interest. AS=-f:VardP--Var(P-R)=-9Var H SJTU Thermodynamics of Materials Spring2o08©X.J.Jin Lecture 6 Property Relation IlPhase Transformation and Applications S. J. T. U. SJTU Thermodynamics of Materials Spring 2008 © X. J. Jin Lecture 6 Property Relation II 恒温下熵变的计算(3) T T P V P S                   21 21 2 1 PP P dP TV S S d S EX: solid the volumetric thermal expansion coefficient, For a change in pressure from 1 atm to 10 atm at constant temperature. The molar volume and volumetric thermal expansion coefficient are constant over the pressure range of interest. V V P P S VV dP V (P2 P1) 9V 2 1          V V P P V V TV TV V            1