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

JEE Main 2021Chemical Equilibrium Question with Solution

From: JEE Main 2021 (Online) 24th February Morning Shift

Question

At 1990 K and 1 atm pressure, there are equal number of Cl2, molecules and Cl atoms in the reaction mixture. The value of Kp for the reaction Cl2 (g) 2Cl(g) under the above conditions is x 10-1.
The value of x is _______. (Rounded off to the nearest integer)

Enter your answer

Show full solutionCorrect answer: 5
Correct answer
5

Step-by-step explanation

Cl2(g) 2Cl(g)

Let moles of both of Cl2 and Cl molecule be x.

Partial pressure of Cl is,

Partial pressure of Cl2 is,

Now,



= 5 101

Hence, x 101

x = 5

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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.