Question

how is ethyl amine prepared from methyl iodide

Answer 1

First methyl iodide reacts with KCN then it get reduced by H2/Ni to produce Ethyl amine

Answer 2

Explanation:

Treat methyl iodide with potassium cyanide which will give methane nitrile.

$CH_3I+KCN\rightarrow CH_3C\equiv N$

Now carry out the reduction of methane nitrile on the surface of a nickel catalyst or with the help of lithium aluminum hydride.

$CH_3C\equiv N\overset{H_2/Ni}\rightarrow CH_3CH_2NH_2$