For the formation of $\mathrm{NH}_3(g)$ from its constituent elements, which of the relation between the…
For the formation of $\mathrm{NH}_3(g)$ from its constituent elements, which of the relation between the reaction quotient $(Q)$ and equilibrium constant $\left(K_C^{\prime}\right)$ is correct for the backward reaction.
$Q=K_C$
$Q>K_C$
$Q < K_C$
$Q=K=1$
Solution
$\mathrm{N}_2+3 \mathrm{H}_2 \rightleftharpoons 2 \mathrm{NH}_3$
For backward reaction to occur reaction quotient (Q) must be greater than equilibrium constant $\left(K_C\right)$, i.e. $Q>K_C$. This will cause conversion of product $\left(\mathrm{NH}_3\right)$ into reactants $\left(\mathrm{N}_2\right.$ and $\left.\mathrm{H}_2\right)$.