Example 13.9b: Determination of Ka from Equilibrium Concentrations

What is the equilibrium constant for the ionization of the \(\ce{HSO4-}\) ion, the weak acid used in some household cleansers:

\(\ce{HSO4-(aq)}\)\(\ce{ + }\)\(\ce{H2O(l)}\)\(\ce{<=>}\)\(\ce{H3O+(aq)}\)\(\ce{ + }\)\(\ce{SO4^2-(aq)}\)\(\ce{ }\)

In one mixture of \(\ce{NaHSO4}\) and \(\ce{Na2SO4}\) at \(Failed to interpret math QQQequilibrium, c[H3O+] QQQ = 0.027\) M; \(c_{\mathrm{\ce{HSO4-}}}\)\( = 0.29 \cdot M;\) and \(c_{\mathrm{\ce{SO4^2-}}}\)\( = 0.13\ \mathrm{M}\).

Think about it...