For the chemical equilibrium, 2 NO_2(~g) leftharpoons N_2 O_4(~g) ;+14.6 kcal increase in temperature

Q21 / 170 · Manipal (MET) 2016 · Chemistry

For the chemical equilibrium, $2 \mathrm{NO}_2(\mathrm{~g}) \rightleftharpoons \mathrm{N}_2 \mathrm{O}_4(\mathrm{~g}) ;+14.6 \mathrm{kcal}$ increase in temperature

A
favours the formation of $\mathrm{N}_2 \mathrm{O}_4$
Correct answer
B
favours the decomposition of $\mathrm{N}_2 \mathrm{O}_4$
C
does not affect equilibrium
D
stop the reaction

Solution

The given reaction is exothermic and according to Le-Chatelier principle, high temperature shifts the equilibrium in backward direction, i.e. high temperature favours the decomposition of $\mathrm{N}_2 \mathrm{O}_4$.

Hence, the correct answer is option: 'B'.

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