The change in Gibbs freee energy for vaporisation of a pure substance is
A. Positive
B. Negative
C. Zero
D. May be positive or negative
Answer: Option C
Solution(By Examveda Team)
Since, the gibbs free energy for vaporization of a pure substance is $$dG=VdP-SdT$$ since during phase change the temperature and pressure remains constant the gibbs free energy remains constant.This Question Belongs to Chemical Engineering >> Chemical Engineering Thermodynamics
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