Chemistry - Chemical Equilibrium Question with Solution | TestHub

The following equilibrium are given: $$\begin{array}{ll}{\mathrm{N}}_2+3{\mathrm{H}}_2\rightleftharpoons 2{\mathrm{NH}}_3& {\mathrm{K}}_1\\ {\mathrm{N}}_2+{\mathrm{O}}_2\rightleftharpoons 2\mathrm{NO}& {\mathrm{K}}_2\\ {\mathrm{H}}_2+\frac{1}{2}{\mathrm{O}}_2\rightleftharpoons {\mathrm{H}}_2\mathrm{O}& {\mathrm{K}}_3\end{array}$$ The equilibrium constant of the reaction $$2{\mathrm{NH}}_3+\frac{5}{2}{\mathrm{O}}_2\rightleftharpoons 2\mathrm{NO}+3{\mathrm{H}}_2\mathrm{O}$$ in terms of ${\mathrm{K}}_1,{\mathrm{K}}_2$ and ${\mathrm{K}}_3$ is:NEET 2003