Organic Compounds Containing Halogens Question 136

Question: On treating a mixture of two alkyl halides with sodium metal in dry ether, 2-methyl propane was obtained. The alkyl halides are

[KCET 2004]

Options:

A) 2-chloropropane and chloromethane

B) 2-chloropropane and chloroethane

C) Chloromethane and chloroethane

D) Chloromethane and 1-chloropropane

Show Answer

Answer:

Correct Answer: A

Solution:

It is Wurtz reaction in which hydrocarbon formed when alkyl halide react with Na metal in dry ether. $ \underset{\text{2 chloro propane}}{\mathop{CH_3-\overset{Cl\ }{\mathop{\overset{|}{\mathop{C}}H}}-CH_3}}+\underset{\begin{smallmatrix} chloro \\ methane \end{smallmatrix}}{\mathop{CH_3Cl}}+2Na\xrightarrow{ether} $

$ \underset{\text{2 methyl propane}}{\mathop{CH_3-\overset{CH_3\ }{\mathop{\overset{|}{\mathop{C}}H-}}CH_3+2NaCl}} $