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Which of the following compounds (a) and...

Which of the following compounds (a) and (b) will not react with a mixture of NaBr and `H_(2)SO_(4)` Explain why?
(a) `CH_(3)CH_(2)CH_(2)`
(b)

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NaBr reacts with `H_(2)SO_(4)` to produce `Br_(2)` gas.
`2NaBr+3H_(2)SO_(4)to2NaHSO_(4)+SO_(2)+Br_(2)+2H_(2)O`
`Br_(2)` thus produced reacts with phenol to form 2,4,6-tribromophenol but propanol does not react.
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