JEE Main 2020ChemistryIonic EquilibriumMediumMCQ

JEE Main 2020 — Ionic Equilibrium Question with Solution

JEE Main 2020 (09 Jan Shift 2)

Question

The solubility product of Cr(OH)3 at 298K is 6.0×10-31. The concentration of hydroxide ions in a saturated solution of CrOH3 will be

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Show full solutionCorrect option: B
Correct answer
B18×10-3114

Step-by-step explanation

CrOH3→Cr+3+3O-
Ksp=s.3S3
⇒6×10-31=27.3s4
⇒s=627×10-311/4
OH-=3s
=3×627×10-3114=18×10-311/4M

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About this question

This is a previous-year question from JEE Main 2020, 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.