$AB\overset {{K_1}} \longleftrightarrow {A^ + } + {B^{ - 1}}$
${K_1} = \frac{{[{A^ + }][{B^ - }]}}{{[AB]}}$
$AB + {B^ - }\overset {{K_2}} \longleftrightarrow AB_2^ - $
${K_2} = \frac{{[AB_2^ - ]}}{{[AB][{B^ - }]}}$
Dividing $K_1$ and $K_2$ we get
$K = \frac{{{K_1}}}{{{K_2}}} = \frac{{[{A^ + }]{{[{B^ - }]}^2}}}{{[AB_2^ - ]}}$
$\therefore \,\frac{{[{A^ + }]}}{{[AB_2^ - ]}} = \frac{K}{{{{[{B^ - }]}^2}}}$
$(I)\, CO_{2(g)} + H_2O_{(g)} $ $\rightleftharpoons$ $ CO_{2(g)} + H_{2(g)} ;\, k_1$
$(II) \,CH_{4(g)} + H_2O_{(g)} $ $\rightleftharpoons$ $ CO_{(g)} + 3H_{2(g)} ;\, k_2$
$(III) \,CH_{4(g)} + 2H_2O_{(g)} $ $\rightleftharpoons$ $ CO_{2(g)} + 4H_{2(g)} ; \,k_3$ તો તેમના સંતુલન અચળાંકો વચ્ચે સાચો સંબંધ........ છે.