Question

An organic compound ' $X$ ' having molecular formula $C_3{H}_{7}N$ can decolourize bromine present in carbon tetrachloride. The compound ' $X$ ' has all three carbon atoms in straight chain. When this compound is heated with alcoholic $KOH$ and chloroform, it gives an organic compound having molecular formula $C_x{H}_{y}N$. The value of ' $y$ ' is______.

Answer 1

Answer: 5

Compound ' $X$ ' can decolourize bromine in $CC{l}_4$ due to the presence of double bond. Several isomeric amine structures can be drawn for the formula $C_3{H}_{7}N$. Out of which we need a structure that contains $1^{\circ }$ amine group $-N{H}_2$. One possible structure is:


In the reaction, $-N{H}_2$ group is replaced by $-NC$ group.
Other isomeric $1^{\circ }$ amine structures also give corresponding isocyanide having same molecular formula $\left(C_4{H}_{5}N\right)$.
Thus, final product will have a molecular formula $C_4{H}_{5}N$.
$\therefore y=5$