MCAT General Chemistry Question 99: Answer and Explanation

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Question: 99

9. Suppose for a chemical reaction. At 300 K, what is the change in Gibbs free energy in

  • A. ΔG = –2000 + (300 K)(8.314)(ln Q)
  • B. ΔG = –2000 – (300 K)(8.314)(ln Q)
  • C. ΔG = –2000 + (300 K)(8.314)(log Q)
  • D. ΔG = –2000 – (300 K)(8.314)(log Q)

Correct Answer: A

Explanation:

This problem asks for the free energy of a reaction at nonstandard conditions, which can be determined with the equation ΔG = ΔG° + RT-ln Q.

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