$K_{p}=K_{C}(R T)^{x}$
where $x=\Delta n_{g}=$ number of gaseous moles in product - number of gaseous moles in reactant
$=1-\left(1+\frac{1}{2}\right)$
$=1-\frac{3}{2}=-\frac{1}{2}$
$N_2 + 3H_2 $ $\rightleftharpoons$ $ Z_{(g)}\,\, 2NH_{3(g)} ; \,\,k_1\,\,, N_2 + O_2 $ $\rightleftharpoons$ $ 2NO \,\,; k_2 \,\,, H_2 +$ $\frac{1}{2}$ $O_2$ $\rightleftharpoons$ $H_2O$ ; $k_3$ તો પ્રક્રિયા $2NH_3$ $+$ $\frac{5}{2}$$O_2$ $\rightleftharpoons$ $2NO$ $+$ $3H_2O$ નો સંતુલન અચળાંક $k_1 , k_2$ અને $k_3$ ના રૂપમાં.....
($K =$ સંતુલન અચળાંક)
$X :\, 2SO_{2(g)} + O_{2(g)} $ $\rightleftharpoons$ $ 2SO_{3(g)}$
$Y:\, PCl_{5(g)} $ $\rightleftharpoons$ $ PCl_{3(g)} + Cl_{2(g)}$
$Z :\, 2HI_{(g)} $ $\rightleftharpoons$ $ H_{2(g)} + I_{2(g)}$