The Clapeyron equation does not apply to second-order phase transitions, but there are two analogous equations, the
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The Clapeyron equation does not apply to second-order phase transitions, but there are two analogous equations, the Ehrenfest equations, that do. They are:
Where α is the expansion coefficient, κT the isothermal compressibility, and the subscripts 1 and 2 refer to two different phases. Derive these two equations. Why does the Clapeyron equation not apply to second-order transitions?
Transcribed Image Text:
α₂-α1 TKT;2-KT;1 dp (a) = dp_Cp,m;2-Cp,m;1 (b) dp= dT TVm (0₂-01)
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Answer The Ehrenfest equations can be derived by taking the partial derivatives of the Gibbs free en...View the full answer
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Related Book For
Physical Chemistry Thermodynamics And Kinetics
ISBN: 9781464124518
10th Edition
Authors: Peter Atkins, Julio De Paula
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