Question

what is the substitution reaction? among ethane ethene and ethyne which is easily undergo substitution reaction? and why?​

Answer 1

ethene is an unsaturated hydrocarbon ,it undergoes addition reaction to become saturated hydrocarbon whereas ethane is saturated hydrocarbon therefore it does not undergo addition reaction. triple bond which are generally weaker than C single bond. these reactive site in ethyne which can give easily addition reaction.

Answer 2

Answer:

Ethane undergoes substitution reaction easily due to the absence of unsaturation.

Explanation:

The replacement of one atom or group by another atom or group is known as a substitution reaction.

Ethane is a saturated hydrocarbon that can undergo only substitution reaction due to the absence of unsaturation.

Ethene is an unsaturated hydrocarbon belonging to an alkene, has a double bond. It can involve an addition reaction.

Ethyne is also an unsaturated hydrocarbon belonging to the alkyne, has a triple bond. It can also involve an addition reaction.

Thus, the compound ethane undergoes substitution reaction easily as shown below:

$C_{2} H_{6} \ +Cl_{2}\ ---- > C_{2} H_{5}Cl\ +\ HCl$