JEE Main 2022ChemistryRedox ReactionsEasyNumerical

JEE Main 2022 — Redox Reactions Question with Solution

JEE Main 2022 (29 Jun Shift 2)

Question

For the reaction given below:

CoCl3. xNH3+AgNO3aq→

If two equivalents of AgCl precipitate out, then the value of x will be _______

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Show full solutionCorrect answer: 5
Correct answer
5

Step-by-step explanation

CoCl3.xNH3+AgNO3→AgCl↓2 mol

For 2 moles of AgCl precipitate out,only two chloride ions should be present out side the coordination sphere that is in the ionization sphere.

Hence, the formula of the complex should be CoNH35ClCl2

CoNH35ClCl2+AgNO3→AgCl↓2 mol

So, the value of x should be 5.

x=5.

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About this question

This is a previous-year question from JEE Main 2022, covering the Redox Reactions 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.