Which of the following relations are correct?
(A)
(B)
(C)
(D)

Question

Which of the following relations are correct?
(A) 
(B) 
(C) 
(D)

Canvas Classes · Accepted Answer

Strategy:
 Review the core equations for thermodynamics spanning internal energy, enthalpy, entropy, and Gibbs energy.

Step 1: Evaluate relations
- (A) : Incorrect. The standard form is  (for expansion work ).
- (B) : Correct definition.
- (C) : Correct definition of entropy change.
- (D) : Incorrect. The correct relation is .

Step 2: Conclusion
Only B and C are correct.

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