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Friday, 9 October

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JEE Main 18 March 2021, Shift 1, Chemistry Q57

Question 57 of 90 in this shift, Chemistry question 27 of 30, Section B.

2 NO(g)+Cl2(g)⇌2 NOCl(s)\mathrm{2\,NO(g) + Cl_2(g) \rightleftharpoons 2\,NOCl(s)} This reaction was studied at −10-10°C and the following data was obtained run | [NO]0[\mathrm{NO}]_0 | [Cl2]0[\mathrm{Cl_2}]_0 | r0r_0 1 | 0.10 | 0.10 | 0.18 2 | 0.10 | 0.20 | 0.35 3 | 0.20 | 0.20 | 1.40 [NO]0[\mathrm{NO}]_0 and [Cl2]0[\mathrm{Cl_2}]_0 are the initial concentrations and r0r_0 is the initial reaction rate. The overall order of the reaction is __________. (Round off to the Nearest Integer).

Official answer

3

NTA final key.

Chapter
Chemical Kinetics
Topic
Rate Laws
Idea tested
Initial Rates Method

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 42 of the 174 JEE Main shifts held from 2017 to 2026.