Question

Complete and balance the following equation:

${\mathrm{C}}_2{\mathrm{H}}_4+{\mathrm{Br}}_2\to \dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}\dot{}$

Answer 1

1. The given reaction is known as the Bromine test which is used to identify the alkyne and alkenes in the laboratory.

2. When unsaturated hydrocarbon ethene $\left({\mathrm{C}}_2{\mathrm{H}}_4\right)$ is bubbled through a solution of bromine $\left(B{r}_2\right)$ in carbon tetrachloride $\left({\mathrm{CCl}}_4\right)$, the brown colour of bromine is discharged due to the formation of colorless addition product ethyl bromide.

3. The balanced equation is:

${\mathrm{C}}_2{\mathrm{H}}_4+{\mathrm{Br}}_2\to {\mathrm{BrCH}}_2{\mathrm{CH}}_2\mathrm{Br}$