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Which of the following compounds gives f...

Which of the following compounds gives fastest reaction with HBr and why?
(i) `(CH_(3))_(3)_OH` (ii) `CH_(3) CH_(2) CH_(2) OH`
(iii) `CH_(3) overset(OH)overset(|)(CH) CH_(3)` (iv) `CH_(3) overset(CH_(3))overset(|)(CH) CH_(2) OH`

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To determine which of the given compounds reacts fastest with HBr, we need to analyze the stability of the carbocations formed during the reaction. The reaction mechanism involves protonation of the alcohol, followed by the loss of water to form a carbocation, which then reacts with bromide ion (Br⁻) to form the alkyl bromide. ### Step-by-Step Solution: 1. **Identify the Compounds**: - (i) `(CH₃)₃OH` - Tertiary alcohol - (ii) `CH₃CH₂CH₂OH` - Primary alcohol - (iii) `CH₃CH(OH)CH₃` - Secondary alcohol ...
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