The two equilibria AB$\rightleftharpoons$A+ + B– and AB + B– $\rightleftharpoons$AB2− are simultaneo

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The two equilibria AB$\rightleftharpoons$A+ + B– and AB + B– $\rightleftharpoons$AB2− are simultaneously maintained in a solution with equilibrium constants K1 and K2, respectively. The ratio of A+ to AB2− in the solution is

Accepted Answer

$K_{1} = \frac{\left\lbrack A^{+} ightbrack\left\lbrack B^{-} ightbrack}{\lbrack ABbrack}	ext{ and }K_{2} = \frac{\left\lbrack AB_{2}^{-} ightbrack}{\lbrack ABbrack\left\lbrack B^{-} ightbrack}$Now, $\frac{\left\lbrack A^{+} ightbrack}{\left\lbrack AB_{2}^{-} ightbrack} = \frac{K_{1}}{K_{2}}.\left\lbrack B^{-} ightbrack^{2}$

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