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Acid-catalysed dehydration of t-butanol is faster than that of n-butanol. Give reasons in one or two sentences. |
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Answer» Solution :Acid-catalysed dehydration of alcohols occurs through the INTERMEDIATE FORMATION of carbocations. `underset("t-Butanol")(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-OH) underset(-H_(2)O)overset(+H^(+))to underset("t-Butyl CARBOCATION (more stable)")(CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C^(+)),underset("n-Butanol")(CH_(3)CH_(2)CH_(2)CH_(2)-OH) underset(-H_(2)O)overset(+H^(+))to underset("n-Butyl carbocation (less stable)")(CH_(3)CH_(2)CH_(2)overset(+)(C)H_(2))` Since t-butyl carbocation is more stable than n-butyl carbocation, therefore, acid-catalysed dehydration of t-butanol occurs fater than n-butanol. |
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