JEE Main 2021 — Ionic Equilibrium Question with Solution
From: JEE Main 2021 (Online) 1st September Evening Shift
Question
The molar solubility of Zn(OH)2 in 0.1 M NaOH solution is x 1018 M. The value of x is _________ (Nearest integer)
(Given : The solubility product of Zn(OH)2 is 2 1020)
(Given : The solubility product of Zn(OH)2 is 2 1020)
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Show full solutionCorrect answer: 2
Correct answer
2
Step-by-step explanation
Due to common-ion effect (presence of NaOH) the concentration of OH will be (2S + 0.1) 0.1
( 0.1 > > 2 S)
Solubility of product,
x = 2
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This is a previous-year question from JEE Main 2021, 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.