JEE Main 2017ChemistryIonic EquilibriumEasyMCQ

JEE Main 2017 — Ionic Equilibrium Question with Solution

JEE Main 2017 (02 Apr)

Question

pK a of a weak acid HA and pK b of a weak base BOH are 3.2 and 3.4 respectively. The pH of their salt AB solution at 25 o C is

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Show full solutionCorrect option: A
Correct answer
A6.9

Step-by-step explanation

Hydrolysis of  salt of weak acid and weak base

pH= 1 2 pK w + pK a − pK b

=1214+3.2-3.4

=6.9

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About this question

This is a previous-year question from JEE Main 2017, covering the Ionic Equilibrium chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.