JEE Main 2021ChemistryChemical EquilibriumChemical Equilibrium Law Of Mass Action And Equilibrium ConstantmediumNumerical

JEE Main 2021Chemical Equilibrium Question with Solution

From: JEE Main 2021 (Online) 27th July Morning Shift

Question

PCl5 PCl3 + Cl2

Kc = 1.844

3.0 moles of PCl5 is introduced in a 1 L closed reaction vessel at 380 K. The number of moles of PCl5 at equilibrium is ______________ 103. (Round off to the Nearest Integer)

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Show full solutionCorrect answer: 3
Correct answer
3

Step-by-step explanation

PCl5(g) PCl3(g) + Cl2(g) K2 = 1.844

t = 0 3moles

t = x x









Moles of PCl5 = 3 1.604 1.396

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About this question

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.