Question

Chlorination of ethane is carried out in the presence of:
A.Anhydrous $AlB{r_3}$
B.Mercuric chloride
C.Ultraviolet light
D.Zinc chloride

Answer 1

Hint: This question gives the knowledge about the free radical chain reactions. Free radical reactions involve unpaired electrons. Radicals can act as reactants, products or can even act as intermediates in various organic reactions.

Complete answer:
Chlorination of ethane is a free radical chain reaction. Free radical reactions can be initiated by UV-light or heat light.
The reaction for chlorination of ethane is as follows:
$C{H_3} - C{H_3}\xrightarrow{{UV}}CC{l_3} - CC{l_3}$

Therefore, option $C$ is the correct option..

Additional Information:
The process of repeating one or more steps number of times, until and unless the chain gets terminated. Radicals can act as reactants, products or can even act as intermediates in various organic reactions. Free radical reactions involve unpaired electrons.

The properties of free radicals are as follows:
$1$. Free radicals can be positively or negatively charged. They may carry zero charge.
$2$. Free radical reactions involve unpaired electrons.
$3$. Free radical reactions can be initiated by peroxides.
$4$. Radicals can act as reactants, products or can even act as intermediates in various organic reactions.
$5$. The products of free radical reactions can be derived from the most stable radical.
$6$. Free radical reactions can be initiated by UV-light or heat light.
$7$. Free radicals play a very crucial role in polymerization, combustion, plasma chemistry and various other chemical processes.

Note:
Always remember that the radicals can act as reactants, products or can even act as intermediates in various organic reactions. Free radical reactions can be initiated by peroxides, UV-light or heat light. Products of free radical reactions can be derived from the most stable radical.