For a pure substance, which of the following does not change during condensation?
Show Hint
- Specific volume
- Specific enthalpy
- Specific internal energy
- Specific Gibbs energy
The Correct Option is D
Solution and Explanation
Step 1: Recall phase equilibrium condition.
During condensation, a substance changes from vapor to liquid, and properties like enthalpy, internal energy, and specific volume change.
Step 2: Gibbs free energy.
At equilibrium, the Gibbs free energy remains the same for both phases in equilibrium. Therefore, it does not change during condensation.
Step 3: Conclusion.
Hence, the correct answer is (D) Specific Gibbs energy.
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