${K_a} = 7.2 \times {10^{ - 10}},\,\,v = 100\,,\,\,\,{x^2} = \frac{{{K_w}}}{{{K_a}}} \times v$
${(0.037)^2} = \frac{{{K_w} \times 100}}{{7.2 \times {{10}^{ - 10}}}}$
${K_w} \times 100 = {(0.037)^2} \times 7.2 \times {10^{ - 10}}\,$
$ \Rightarrow \,\,\,{K_w} = \frac{{0.037 \times 0.037 \times 7.2 \times {{10}^{ - 10}}}}{{100}} = 0.986 \times {10^{ - 14}}$
$(i)$ $\begin{gathered}
HCN\left( {aq} \right) + {H_2}O\left( l \right) \rightleftharpoons {H_3}{O^ + }\left( {aq} \right) + C{N^ - }\left( {aq} \right) \hfill \\
{K_a} = 6.2 \times {10^{ - 10}} \hfill \\
\end{gathered} $
$(ii)$ $\begin{gathered}
C{N^ - }\left( {aq} \right) + {H_2}O\left( l \right) \rightleftharpoons HCN\left( {aq} \right) + O{H^ - }\left( {aq} \right) \hfill \\
{K_b} = 1.6 \times {10^{ - 5}} \hfill \\
\end{gathered} $
આપેલ છે. આ સંતુલનનો બેઝિક પ્રબળતાનો સાચો ક્રમ નીચેના પૈકી ક્યો દર્શાવે છે?