Equimolar solutions of $\mathrm{HF}, \mathrm{HCOOH}$ and HCN at 298 K have the values of $K_a$ as $6

Question

Equimolar solutions of $\mathrm{HF}, \mathrm{HCOOH}$ and HCN at 298 K have the values of $K_a$ as $6.8 	imes 10^{-4}, 1.8 	imes 10^{-4}$ and $4.8 	imes 10^{-9}$ respectively. What will be the order of their acidic strength?

Professor PC Thomas Classes · Answer

(b)