Question

What happens when ethene is allowed to combine $\left({\mathrm{Cl}}_2\right)$ gas. Give a balanced chemical equation and write the name of the products and reactants.

Answer 1

A halogenation reaction is defined as a reaction in which halogen atoms are added across the double bond or triple bond of the unsaturated hydrocarbons by the breaking of the bond.

Halogenation is a type of addition reaction in which an addition product is formed.

When Ethene $\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ is allowed to combine Chlorine $\left({\mathrm{Cl}}_2\right)$ gas, 1,2-Dichloroethane $\left({\mathrm{C}}_2{\mathrm{H}}_4{\mathrm{Cl}}_2\right)$ is formed as the product.

The balanced chemical equation of the reaction is written as:

$$\begin{gathered} {\mathrm{CH}}_2={\mathrm{CH}}_2+\mathrm{Cl}-\mathrm{Cl}\to {\mathrm{ClCH}}_2-{\mathrm{CH}}_2\mathrm{Cl} \\ \left(\mathrm{Ethene}\right)\left(\mathrm{Chlorine}\right)(1,2-\mathrm{Dichloroethane}) \end{gathered}$$

The reactants present in the chemical equation are Ethene and Chlorine gas and the product formed in the chemical equation is 1,2-Dichloroethane.