JEE Main 2021 — Chemical Equilibrium Question with Solution
From: JEE Main 2021 (Online) 27th August Morning Shift
Question
The number of moles of NH3, that must be added to 2L of 0.80 M AgNO3 in order to reduce the concentration of Ag+ ions to 5.0 108 M (Kformation for [Ag(NH3)2]+ = 1.0 108) is ____________. (Nearest integer)
[Assume no volume change on adding NH3]
[Assume no volume change on adding NH3]
Enter your answer
Show full solutionCorrect answer: 4
Correct answer
4
Step-by-step explanation
Let moles added = a
1.6 = 0.4 a = 4
1.6 = 0.4 a = 4
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This is a previous-year question from JEE Main 2021, covering the Chemical 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.