JEE Main Chemistry question
How many of the following combinations of reactants will react less than 2% of the theoretically possible extent? (a) CH₃COOH + H₂O (b) CH₃COO⁻ + H₂O (c) CH₃COO⁻ + H₃O⁺ (d) CH₃COOH + KOH (e) CH₃COOK + HCl(aq) (f) HCl(g) + H₂O (g) Cl⁻ + H₃O⁺ (h) Cl⁻ + H₂O
Answer: 4
Solution
Weak-acid ionization (a, ~1.3% at typical concentrations), weak hydrolysis of acetate (b), and reactions of ions that are essentially non-reactive since they are conjugates of strong acids/bases (g, h) all proceed to a negligible (<2%) extent = 4. The remaining
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