JEE Main 2022 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 29 June 2022, Shift 2, Chemistry Q85

Question 85 of 90 in this shift, Chemistry question 25 of 30, Section B.

The equation

k = (6.5\times10^{12}\ \mathrm{s^{-1}})\,e^{-26000\,\mathrm{K}/T}

is followed for the decomposition of compound A. The activation energy for the reaction is ___ kJ

\mathrm{mol^{-1}}

. [nearest integer] (Given: R = 8.314 J

\mathrm{K^{-1}}

\mathrm{mol^{-1}}

)

Official answer

216

NTA final key.

Chapter: Chemical Kinetics
Topic: Arrhenius Equation
Idea tested: Activation Energy Calculation

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Asked 7× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.