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does not change during phase transformation processes like sublimation melting &...

This question belongs to Chemical Engineering Chemical Engineering Thermodynamics
Chemical Engineering Thermodynamics
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__________ does not change during phase transformation processes like sublimation, melting & vaporisation.

Answer & Solution
Correct Answer: Option B
Since during phase change the temperature and pressure remains constant we can say the gibbs free energy remains constant and the relation is given by:
For single component and closed system : $$dG = VdP - SdT$$
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