8) What happens when 2-methylpropan-2-ol heated at 363 K in presence of 20% H2SO4
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20% H2SO4 when added to 2-methylpropan-2-ol at 360 K produces 2-methyl propene while when NaBr and conc. H2SO4 is added to 2-methylpropan-2-ol, 2-bromo, 2-methyl propane is produced.
The first case is an example of dehydration reaction , where sulfuric acid acts as a dehydrating agent and eliminate water from the reactant giving rise to an alkene.
The second case is an example of first order substitution reaction , where the alcoholic group in the reactant is substituted by nucleophilic bromine ion involving a carbocation formation.
Explanation:
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