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

JEE Main 2021Chemical Equilibrium Question with Solution

From: JEE Main 2021 (Online) 18th March Evening Shift

Question

The gas phase reaction at 400 K has Go = + 25.2 kJ mol-1.

The equilibrium constant KC for this reaction is ________ 102. (Round off to the Nearest Integer).

[Use : R = 8.3 J mol1 K1, ln 10 = 2.3 log10 2 = 0.30, 1 atm = 1 bar]

[antilog (0.3) = 0.501]

Enter your answer

Show full solutionCorrect answer: 1.66
Correct answer
1.66

Step-by-step explanation

Using formula,

G = RTln(Kp)

25.2 103 = 8.3 400 2.3 log (Kp)

Kp = 103.3

= 103 0.501

= 5.01 104 Bar1

Also,









m3/mole

L/mol

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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.