Question

What happens when (give balanced chemical equation and write the names of the reactants and products in each case):

Ethyne reacts with bromine

Answer 1

Step 1:

Ethylene $\left({\mathrm{C}}_2{\mathrm{H}}_2\right)$ gives addition reaction with Hydrogen $\left(\mathrm{H}\right)$ and halogens because triple bond is highly reactive in nature.

Step 2:

The chemical reaction of Ethylene with Bromine $\left({\mathrm{Br}}_2\right)$ is given below:

$$\begin{gathered} \mathrm{H}-\mathrm{C}\equiv \mathrm{C}-\mathrm{H}+{\mathrm{Br}}_2\to \mathrm{BrCH}=\mathrm{CHBr} \\ \mathrm{Ethylene}\mathrm{Bromine}1,2-\mathrm{Dibromoethene} \\ \mathrm{BrCH}=\mathrm{CHBr}+{\mathrm{Br}}_2\to {\mathrm{Br}}_2\mathrm{CH}-{\mathrm{CHBr}}_2 \\ 1,2-\mathrm{Dibromoethene}\mathrm{Bromine}1,1,2,2-\mathrm{Tetrabromoethane} \end{gathered}$$