MCAT General Chemistry Question 143: Answer and Explanation
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Question: 143
8. Question below refer to the titration curve of acid X shown below:
At what pH is the second equivalence point?
- A. pH = 3.0
- B. pH = 4.1
- C. pH = 5.9
- D. pH = 7.2
Correct Answer: C
Explanation:
The second equivalence point is the midpoint of the second steep increase in slope. This corresponds to approximately pH = 5.9.