JEE Main 2008 — Ionic Equilibrium Question with Solution
From: AIEEE 2008
Question
The pKa of a weak acid, HA, is 4.80. The pKb of a weak base, BOH, is 4.78. The pH of an aqueous
solution of the corresponding salt, BA, will be
Choose an option
Show full solutionCorrect option: C
Correct answer
C7.01
Step-by-step explanation
In aqueous solution (salt) hydrolyses to give
Base acid
Now is given by
Substituting given values, we get
Base acid
Now is given by
Substituting given values, we get
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This is a previous-year question from JEE Main 2008, 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.