MCAT General Chemistry Question 100: Answer and Explanation
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Question: 100
10. A chemical reaction has a negative enthalpy and a negative entropy. Which of the following terms necessarily describes this reaction?
- A. Exothermic
- B. Endothermic
- C. Exergonic
- D. Endergonic
Correct Answer: A
Explanation:
A reaction with a negative enthalpy is, by definition, exothermic. Because both enthalpy and entropy are negative, this is a temperature-dependent process, and the reaction will be both endergonic and exergonic—but only at particular temperatures, eliminating choices (C) and (D).