$\begin{gathered} pK{a_1}\,\,\,\,\,\,{p^{{K_{ + 2}}}} \hfill \\ K{a_1}\,\,\,\,\,\,\,\,\,{K_{{a_2}}} \hfill \\ \end{gathered} $
($PbCl_2$ નો $K_{SP}$ $ = 3.2 \times 10^{-8}$; $Pb$ નું પરમાણ્વીય દળ $= 207\, u$)