The value of entropy change, {\S}_\beta- {\S}_\alpha (in {\J} {\mol}^{-1} {\K}^{-1} ), at 300 {\K} is_____________ . [Use: \ln 2=0.69 Given: {\S}_\beta- {\S}_\alpha=0 at 0 {\K}] [JEE Adv 2023 P2]

Thermodynamics

Paragraph for next two questions
The entropy versus temperature plot for phases α and β at 1 bar pressure is given.
ST and S0 are entropies of the phases at temperatures T and 0K, respectively.

The transition temperature for α to β phase change is 600K and Cp,β−Cp,α=1Jmol−1K−1. Assume (Cp,β−Cp,α) is independent of temperature in the range of 200 to 700K.Cp,α and Cp,β are heat capacities of α and β phases, respectively.

Section: Chemistry

Question : 3 of 40

Marks: +1, -0

The value of entropy change, Sβ−Sα (in Jmol−1K−1 ), at 300K is_____________ .
[Use: ln‌2=0.69
Given: Sβ−Sα=0 at 0K]

[JEE Adv 2023 P2]

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