MCAT General Chemistry Question 92: Answer and Explanation
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Question: 92
2. A reaction has a positive entropy and enthalpy. What can be inferred about the progress of this reaction from this information?
- A. The reaction is spontaneous.
- B. The reaction is nonspontaneous.
- C. The reaction is at equilibrium.
- D. There is not enough information to determine whether the reaction is spontaneous or not.
Correct Answer: D
Explanation:
There is not enough information in the problem to determine whether or not the reaction is spontaneous. If the signs of enthalpy and entropy are the same, the reaction is temperature dependent according to ΔG = ΔH - TΔS. Without the temperature, we cannot determine if this reaction is spontaneous, nonspontaneous, or at equilibrium.