Question

Name the functional group in ${{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}{\text{Cl}}$.

Answer 1

Hint: To identify the functional group present in the compound, we must know the definition of functional groups. This term is mainly used in organic chemistry. Functional groups like alcohol, amines, halo groups like chloro, bromo; ketones, etc. are present in the compound.

Complete step by step answer:
-Now, first, we will define the functional group. We can say that the functional groups are present in between the molecules giving the molecule a specific property.
-As mentioned some functional groups are alcohol, amines, halo groups, ketones, etc.
-If we take the example of methane it contains no functional group and is known as an alkane. But when we attach –OH group (alcohol group) to it; this will be named as methanol.
-We can say that methane and methanol will differ in their properties due to the attachment of the functional group.
-Now, we have to identify the functional group in the given compound, i.e. ${{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}{\text{Cl}}$.
-We can see that the chlorine atom is attached to the carbon atom.
-As mentioned above chloro belongs to the halo group. The name of a given compound is chloroethane.
-In the last, we can conclude that the functional group present in this compound is a chloro group that is categorised under the halo group.
-Hence, the name of the functional group in ${{\text{C}}_{\text{2}}}{{\text{H}}_{\text{5}}}{\text{Cl}}$ is chloro.

Note: Don’t get confused about why we named it chloroethane. As we know, the total number of carbon atoms present in the compound is 2, so the root name is ‘eth’. As identified, the functional group is chloro. So, we named it as chloroethane, and it is also known as ethyl chloride.