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What is the hydrolysis constant of a weak acid-weak base?(a) KW/Kb(b) KW/Ka(c) KW/KaKb(d) 1/KaKbThe question was posed to me during a job interview.I would like to ask this question from Equilibrium topic in division Equilibrium of Chemistry – Class 11

Answer»

The correct answer is (C) KW/KaKb

Easiest explanation: The hydrolysis constant of a WEAK ACID and weak base is KW/KaKb, the degree of hydrolysis is √KW/KaKb and the pH of the solution is given by 1/2pKW + 1/2pKa – 1/2pKb. An example of a salt of a weak acid and a weak base is CH3COOHNH4.



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