The incorrect expression among the following is:

(1) For isothermal process
(2)
(3) (at constant P)
(4)

Question

The incorrect expression among the following is:

(1) For isothermal process 
(2) 
(3)  (at constant P)
(4)

Canvas Classes · Accepted Answer

Strategy:
 Evaluate the mathematical validity of standard thermodynamic equations.

Step 1: Review options
- (1): Standard isothermal reversible work formula. (Correct)
- (2): Starting from , then . The option omits the minus sign. (Incorrect)
- (3): At constant , . Thus . (Correct)
- (4): Direct rearrangement of the standard free energy-constant relation. (Correct)

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