Question

Write the reaction of ethene with $\mathrm{HCl}$.

Answer 1

Ethene $\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ contains double bonds between the two Carbon $\left(\mathrm{C}\right)$ atoms so it is an unsaturated hydrocarbon.

The chemical reaction involves the reaction of a reactant molecule with a reagent to produce an intermediate which is converted into final products.

A chemical reaction in which two or more reactants react together to form a single larger product is called an addition reaction.

The reaction of Ethene $\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ with Hydrogen chloride $\left(\mathrm{HCl}\right)$ forms Chloroethane $\left({\mathrm{C}}_2{\mathrm{H}}_5\mathrm{Cl}\right)$ as the major product. This reaction is an addition reaction.

The reaction of Ethene with Hydrogen chloride can be written as:

$$\begin{gathered} {\mathrm{CH}}_2={\mathrm{CH}}_2+\mathrm{H}-\mathrm{Cl}\to {\mathrm{CH}}_3-{\mathrm{CH}}_2-\mathrm{Cl} \\ \left(\mathrm{Ethene}\right)(\mathrm{Hydrogen}(\mathrm{Chloroethane}) \\ \mathrm{chloride}) \end{gathered}$$