Q313
The change in Gibbs freee energy for vaporisation of a pure substance is
A.
Positive
B.
Negative
C.
Zero
AnswerD.
May be positive or negative
Answer: Option C
Solution
Answer: Option C
Solution:
Since, the gibbs free energy for vaporization of a pure substance is since during phase change the temperature and pressure remains constant the gibbs free energy remains constant.