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6-2.Equilibrium-II (Ionic Equilibrium)
medium
$HA$ એસિડનું આયોનાઇઝ $HA $ $\rightleftharpoons$ $ H^+ + A^-$ $1.0$ મોલર દ્રાવણની $pH = 5$ છે તો વિયોજન અચળાંક = ......
A
$10^{-10}$
B
$5$
C
$5 \times 10^{-8}$
D
$1 \times 10^{-5}$
Solution
$\begin{align} {{\text{H}}^{+}}=\sqrt{{{K}_{a}}C}\,\,\,\,\,\,pH=5 \\ ({{10}^{-5}})=\sqrt{{{K}_{a}}\times 1}\,\,\,\,\,\,\,\,{{H}^{+}}={{10}^{-5}} \\ {{K}_{a}}={{10}^{-10}} \\ \end{align}$
Standard 11
Chemistry