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Saturday, 31 October

JEE Main 2024 · ChemistryNumerical answerNumerical valueMediumCalculation

JEE Main 9 April 2024, Shift 2, Chemistry Q85

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

Consider the following first order gas phase reaction at constant temperature A(g)→2B(g)+C(g)\mathrm{A(g) \rightarrow 2B(g) + C(g)} If the total pressure of the gases is found to be 200 torr after 23 sec. and 300 torr upon the complete decomposition of A after a very long time, then the rate constant of the given reaction is ________ ×10−2 s−1\times 10^{-2}\ \mathrm{s^{-1}} (nearest integer) [Given : log⁡10(2)=0.301\log_{10}(2) = 0.301]

Official answer

3

NTA final key.

Chapter
Chemical Kinetics
Topic
Rate Laws
Idea tested
First-Order Gas Phase Kinetics via Pressure

Same topic in other shifts

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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.