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JEE Main 201815 AprilMorning ShiftOnline
Exam
JEE Main
Year
2018
Date
15 April
Shift
Morning Shift
Mode
Online
Subject
Chemistry
Chapter
Chemical Equilibrium

JEE Main 2018 · 15 April · Morning Shift · Online · Chemistry · Chemical Equilibrium

In which of the following reactions, an increase in the volume of...

In which of the following reactions, an increase in the volume of the container will favour the formation of products?

Options

  1. A4NH3(g)+5O2(g)⇌4NO4 \mathrm{NH}_3(\mathrm{g})+5 \mathrm{O}_2(\mathrm{g}) \rightleftharpoons 4 \mathrm{NO} (g) +6H2O(l)+6 \mathrm{H}_2 \mathrm{O}(\mathrm{l})
  2. B2NO2(g)⇌2NO(g)+O22 \mathrm{NO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_2 (g)
  3. C3O2⇌2O3(g)3 \mathrm{O}_2 \rightleftharpoons 2 \mathrm{O}_3(\mathrm{g})
  4. DH2(g)+\mathrm{H}_2(\mathrm{g})+\mathrm{I}2(g)⇌2HI(g)_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{HI}(\mathrm{g})

Correct answer

B. 2NO2(g)⇌2NO(g)+O22 \mathrm{NO}_2(\mathrm{g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_2 (g)

Step-by-step solution

Volume ↑P↓\uparrow P \downarrow, reaction proceeds in which direction where the number of moles of gases increases. 2NO2( g)⇌2NO(g)+O2( g)2 \mathrm{NO}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}(\mathrm{g})+\mathrm{O}_2(\mathrm{~g}) Δng=(2+1)−2=1\Delta \mathrm{n}_{\mathrm{g}}=(2+1)-2=1
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