Which of these is NOT a state function?

Answer and explanation

Correct answer: C. Work

  1. Step 1: State functions depend solely on the initial and final thermodynamic equilibrium states of the system, independent of the transformation pathway (e.g., internal energy, enthalpy, entropy).
  2. Step 2: Path functions depend intrinsically on the specific trajectory taken during the process.
  3. Step 3: Mechanical work and heat transfer are path functions; therefore, Work is not a state function.
Answer
Work.

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