Explain the reaction mechanism for the following reactions

1) CH₃Cl + AgCN---------> CH₃NC + AgCl

2) CH₃CN + H₃O⁺ ------------> CH_​3 COOH

1) AgCN is a covalent compound and it does not produce ionic CN^-, whereas it donate its electron through N only. So it exist as

$$\begin{gathered} Ag - \stackrel{-}{N}\equiv \stackrel{+}{C} \\ Thus it reacts with C{H}_{3}Cl as \\ C{H}_{3}Cl + Ag - \stackrel{-}{N}\equiv \stackrel{+}{C} \to C{H}_3-\stackrel{-}{N}\equiv \stackrel{+}{C} + AgCl \end{gathered}$$
2) The conversion of cyanides to acid can be carried out either in the presence of acid or base.
In the place of R consider CH_3.