Question

Ethene when treated with Br₂ in the presence of CCl₄ which compound is formed

• A. 1, 2-dibromoethane
• B. 1-bromo-2-chloroethane
• C. Both (a) and (b)
• D. 1, 1, 1 - tribromoethane

Answer 1

The correct option is A

1, 2-dibromoethane

Addition of Halogen $\left(X_2\right)$: Alkene reacts readily with chlorine or bromine in non nucleophilic solvent like $CC{l}_4$ to give vicinal dichloro or dibromoalkene respectively

The red colour of solution disappears.

Note. (a) It is an example of ionic mechanism.

Trans addition occurs in this case