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When hydrogen halides react with alcohols, alkyl group rearrangement does not typically happen with most primary alcohols. What is the most accurate reason for this?

1. Primary carbocations are not stable and therefore do not form.
2. Primary carbocations cannot undergo rearrangement.
3. Both statements are correct.
4. Both statements are incorrect.

Correct answer: Primary carbocations are not stable and therefore do not form.

Solution

Primary carbocations are not stable and therefore do not form, which is the reason that alkyl group rearrangement does not typically happen with most primary alcohols during reactions with hydrogen halides.

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