Question

Which of the following chemical equilibria is favoured by increase in temperature?

• A. $N_2{O}_4\rightleftharpoons 2N{O}_2△H=+59kJmo{l}^{-1}$
• B. $N_2+3H_2\rightleftharpoons 2N{H}_3△H=22kcalmo{l}^{-1}$
• C. $2S{O}_2+O_2\rightleftharpoons 2S{O}_3△H=47kcalmo{l}^{-1}$
• D. All of the above

Answer 1

The correct option is D All of the above

$△H>0,$ favoured at high temperature.

When $△H$ is positive, the reaction is favoured at high temperature and when $△H$ is negative, the reaction is favoured at low temperature.
Since, all the reactions are endothermic, they will favour increase in temperature