MCAT General Chemistry Question 51: Answer and Explanation

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Question: 51

6. What is the most specific characterization of the reaction shown?

Ca(OH)₂ (aq) + H₂SO₄ (aq) → CaSO₄ (aq) + H₂O (l)

A. Single-displacement
B. Neutralization
C. Double-displacement
D. Oxidation–reduction

Correct Answer: B

Explanation:

This reaction is a classic example of a neutralization reaction, in which an acid and a base react to form water and a new aqueous compound. Although this reaction also fits the criteria for a double-displacement reaction, choice (C), in which two molecules essentially exchange ions with each other, neutralization is a more specific description of the process.

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