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JEE Main 2002
Exam
JEE Main
Year
2002
Subject
Chemistry
Chapter
Chemical Equilibrium

JEE Main 2002 · Chemistry · Chemical Equilibrium

Change in volume of the system does not alter the number of moles...

Change in volume of the system does not alter the number of moles in which of the following equilibria ?

Options

  1. AN2( g)+O2( g)⇌2NO(g)\mathrm{N}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})
  2. BPCl5( g)⇌PCl3( g)+Cl2( g)\mathrm{PCl}_5(\mathrm{~g}) \rightleftharpoons \mathrm{PCl}_3(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g})
  3. CN2( g)+3H2( g)⇌2NH3( g)\mathrm{N}_2(\mathrm{~g})+3 \mathrm{H}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NH}_3(\mathrm{~g})
  4. DSO2Cl2( g)⇌SO2( g)+Cl2( g)\mathrm{SO}_2 \mathrm{Cl}_2(\mathrm{~g}) \rightleftharpoons \mathrm{SO}_2(\mathrm{~g})+\mathrm{Cl}_2(\mathrm{~g})

Correct answer

A. N2( g)+O2( g)⇌2NO(g)\mathrm{N}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})

Step-by-step solution

In this reaction the ratio of number of moles of reactants to products is same i.e. 2 : 2, hence change in volume will not alter the number of moles.
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