How much water must added to 300 ml of 0.2 M solution of CH3COOH for the degree of dissociation of t — Ionic Equilibrium Chemistry Question
Question
How much water must added to 300 ml of 0.2 M solution of CH3COOH for the degree of dissociation of the acid to double? Ka for the acetic acid = 1.8 * 10^-5.
Answer: D
💡 Solution & Explanation
α = √(Ka/C). For α to double: C2 = C1/4. V2 = 4*V1 = 1200 mL. Water added = 1200 - 300 = 900 mL.
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