JEE Main 2021ChemistryChemical KineticsMediumNumerical

JEE Main 2021 — Chemical Kinetics Question with Solution

JEE Main 2021 (18 Mar Shift 1)

Question

2NO(g)+Cl2( g)⇌2NOCl(s)
This reaction was studied at -10°C and the following data was obtained

run[NO]0Cl20   r010.100.100.1820.100.200.3530.200.201.40

[NO]0 and Cl20 are the initial concentrations and r0 is the initial reaction rate. The overall order of the reaction is
(Round off to the Nearest Integer).

Enter your answer

Show full solutionCorrect answer: 3
Correct answer
3

Step-by-step explanation

r=k[NO]mCl2n

=k(0.1)m(0.1)n...1

=k(0.1)m(0.2)n….(2)

=k(0.2)m(0.2)n….(3)

n=1

m=2

m+n=3

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About this question

This is a previous-year question from JEE Main 2021, covering the Chemical Kinetics 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.