JEE Main 2018ChemistryChemical EquilibriumMediumMCQ

JEE Main 2018 — Chemical Equilibrium Question with Solution

JEE Main 2018 (16 Apr Online)

Question

The gas phase reaction 2NO2g → N2O4 g is an exothermic reaction. The decomposition of N2O4 , in equilibrium mixture of NO2 g and N2O4 (g) can be increased by:

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Show full solutionCorrect option: A
Correct answer
AAddition of an inert gas at constant pressure

Step-by-step explanation

2 NO2g→ N2O4 g                ∆H=(-)ve
By addition of inert gas at constant pressure, volume increases and thus, the pressure decreases. The reaction now moves in backward direction as this would increase pressure and hence, decomposition of N2O4 increases.

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About this question

This is a previous-year question from JEE Main 2018, 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.