Which reaction mechanism is primarily involved in the addition of HBr to an alke

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Question: Which reaction mechanism is primarily involved in the addition of HBr to an alkene?

Options:

Correct Answer: Electrophilic addition

Solution:

The addition of HBr to an alkene occurs via an electrophilic addition mechanism.

Which reaction mechanism is primarily involved in the addition of HBr to an alkene?

Which reaction mechanism is primarily involved in the addition of HBr to an alkene?

Step 1: Identify the alkene, which is a molecule with a carbon-carbon double bond.
Step 2: Recognize that HBr is a strong acid that can donate a proton (H+).
Step 3: Understand that the double bond in the alkene acts as a nucleophile, meaning it can donate electrons.
Step 4: The H+ from HBr attacks one of the carbon atoms in the double bond, forming a carbocation (a positively charged carbon).
Step 5: The Br- ion (the bromide ion) then attacks the carbocation, resulting in the addition of Br to the alkene.
Step 6: The final product is an alkyl bromide, where H and Br are added across the double bond.

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