A chemical reaction will occur spontaneously at constant pressure and temperature, if the free energy is________________?
Correct answer: D. Negative
- A. Zero
- B. Positive
- C. None of these
- D. Negative
Explanation
At constant temperature and pressure, a spontaneous change has a negative change in Gibbs free energy, ΔG < 0. ΔG = 0 indicates equilibrium, while a positive value means the forward change is non-spontaneous.
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