When $\mathrm{NaNO}_{3}$ is heated in a closed vessel, oxygen is liberated and $\mathrm{NaNO}_{2}$ i

Question

When $\mathrm{NaNO}_{3}$ is heated in a closed vessel, oxygen is liberated and $\mathrm{NaNO}_{2}$ is left behind. At equilibrium\

Professor PC Thomas Classes · Answer

(c, d): $2 \mathrm{NaNO}_{3(s)} ightleftharpoons$ $$ 2 \mathrm{NaNO}_{2(s)}+\mathrm{O}_{2(\mathrm{~g})} $$ In this case $\Delta n$ is positive $(1-0=1)$ so increase in pressure favours backward reaction. Since heat is added so the reaction is endothermic so increase in temperature will favour the forward reaction.\