Question

In the reaction of hydrogen bromide with an alkene ( in the absence of peroxides ), the first step of the reaction is the ______to the alkene.

• A. Fast addtion of an electrophilic
• B. Slow addition of a electrophile
• C. fast additon of a nucleophilic
• D. slow addition of a nucleophile

Answer 1

The correct option is B Slow addition of a electrophile

In the reaction of $HBr$ with alkene(in absence of peroxide), the first step is slow addition of electrophile to the alkene which results in the formation of carbocation as shown in the above image.