Write the mechanism of the following reaction :
Primary alcohols such as ethanol react by SN2 mechanism with halogen acid such as HBr as follows:
This is a nucleophilic substitution reaction. It follows SN2 mechanism. The mechanism is as follows:
1) Protonation of hydroxyl group to make it a good leaving group.
2) Displacement of water molecule by bromide ion to form alkyl bromide.
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