What will be the ionisation constant of formic acid if its 0.01 M solution is $14.5 \%$ ionised?

Question

Professor PC Thomas Classes · Answer

(a) : $K_a=C \alpha^2$ 
$ \alpha=\frac{14.5}{100}=0.145 ; \K_a=0.01 	imes(0.145)^2=2.1 	imes 10^{-4} $