Question

Which organic bromide would undergo E₂ dehydrohalogenation to give 1-hexene as a pure alkene?

a) 1-bromohexane
b) 2-bromohexane
c) 3-bromohexane
d) 4-bromohexane

Answer 1

2-bromohexane (option b) would undergo E₂ dehydrohalogenation to give 1-hexene as a pure alkene.

Step-by-step explanation:

The organic bromide that would undergo E₂ dehydrohalogenation to give 1-hexene as a pure alkene is 2-bromohexane (option b).

When 2-bromohexane undergoes E₂ dehydrohalogenation, it eliminates HBr to form a double bond between the second and third carbon atoms, resulting in the formation of 1-hexene as a pure alkene.