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What name is given to the equilibrium constant for the ionization of an acid?
AThe solubility product constant
BThe ion product constant of water
CThe acid-ionization constant
DThe rate constant of the forward step
Answer & Solution
Correct answer: C. The acid-ionization constant
1. Every equilibrium has its own constant, and acid ionization is an equilibrium.
2. Its constant is named the acid-ionization constant.
3. Comparing those constants ranks acids by strength on a single numerical scale.
4. The ion product of water is a different constant, describing water's own ionization.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 14 "Acid-Base Equilibria", section 14.3 Relative Strengths of Acids and Bases_
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