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- Subject
- Thermodynamics for Chemicalchemical-engineering › thermodynamics-for-chemical-chemical-engineering
- Published
- 10 Mar 2019
- Last updated
- 12 Jun 2026
Explanation
During phase transitions like melting, sublimation, and vaporization, the Gibbs free energy remains unchanged, whereas entropy and internal energy typically vary.
More Thermodynamics for Chemical MCQs
Practice related questions from the same subject.
- 1.Which of the following statements is accurate?
- 2.Given that Gibbs free energy (G) is defined as G = H – TS and Helmholtz free energy (A) as A = E – TS, which of the following correctly represents the Gibbs-Helmholtz equation?
- 3.Which law of thermodynamics is the basis for the operation of a refrigerator?
- 4.Entropy, a quantity that quantifies the disorder within a system, is characterized by which of the following?
- 5.What is the heat extraction rate corresponding to one ton of refrigeration?
- 6.Which component is absent in both the vapor compression and absorption refrigeration systems?
- 7.Lenz's law is derived from the principle of conservation of which quantity?
- 8.For a pure substance at constant temperature and pressure, what is the ratio of the Gibbs free energy to the chemical potential for one mole?
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