Answer:
Acetic acid
is a weak acid, it undergoes ionisation in aqueous medium as follows:
\[\underset{\begin{smallmatrix}
t=0 \\
{{t}_{eq}}
\end{smallmatrix}}{\overset{{}}{\mathop{{}}}}\,\,\,\,\,\underset{\begin{smallmatrix}
C \\
C-C\alpha
\end{smallmatrix}}{\mathop{C{{H}_{3}}COOH(aq)}}\,\rightleftharpoons
\underset{\begin{smallmatrix}
0 \\
C\alpha
\end{smallmatrix}}{\mathop{C{{H}_{3}}CO{{O}^{-}}(aq)}}\,+\underset{\begin{smallmatrix}
0 \\
C\alpha
\end{smallmatrix}}{\mathop{{{H}^{+}}(aq)}}\,\] where
\[\alpha \]is degree of ionisation.
\[{{K}_{a}}=\frac{[C{{H}_{3}}CO{{O}^{-}}][{{H}^{+}}]}{[C{{H}_{3}}COOH]}=\frac{C\alpha
\times C\alpha }{C-C\alpha }\]
\[{{K}_{a}}=\frac{C{{\alpha }^{2}}}{(1-\alpha
)}\] \[\because a
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