Consider the reactions:

(i) ${\mathrm{PCl}}_5\left(\mathrm{g}\right)\rightleftharpoons {\mathrm{PCl}}_3\left(\mathrm{g}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$

(ii) ${\mathrm{N}}_2{\mathrm{O}}_4\left(\mathrm{g}\right)\rightleftharpoons 2{\mathrm{NO}}_2\left(\mathrm{g}\right)$

What will be the effect of addition of an inert gas at constant volume? 

 

The dissociation of phosgene, which occurs according to the reaction

${COCl}_2\left(\mathrm{g}\right)\rightleftharpoons \mathrm{CO}\left(\mathrm{g}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)$

Is an endothermic process. Which of the following will increase the degree of dissociation of ${\mathrm{COCl}}_2$?

For the reaction, $\frac{1}{2}{\mathrm{N}}_2\left(\mathrm{g}\right)+\frac{1}{2}{\mathrm{O}}_2\left(\mathrm{g}\right)\rightleftharpoons \mathrm{NO}\left(\mathrm{g}\right)$

If pressure is increased by reducing the volume of the container then:

At constant temperature, the equilibrium constant (${\mathrm{K}}_{\mathrm{p}}$) for the decomposition reaction: ${\mathrm{N}}_2{\mathrm{O}}_4\rightleftharpoons 2{\mathrm{NO}}_2,$ is expressed by ${\mathrm{K}}_{\mathrm{p}}=\frac{4{\mathrm{x}}^2\mathrm{P}}{(1-{\mathrm{x}}^2)}$, where $\mathrm{P}$ is the pressure and $\mathrm{x}$ is the extent of decomposition. Which of the following statements is true?