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For dissociation of weak acid HA in water: HA ⇌ H+ + A-. Equilibrium constant is called:
ASolubility product Ksp
BKa (acid dissociation constant)
CKw
DKb
Answer & Solution
Correct answer: B. Ka (acid dissociation constant)
Ka is the acid dissociation constant: Ka = [H+][A-]/[HA]. Larger Ka means stronger acid (more dissociation).
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