Alcohols or alkanols undergo dehydration reactions to generate alkene.The dehration reaction proceeds by heating alcoholes in the presence of a strong acid, such as sulfuric acid, at high temperature.
Strong mineral acids such as sulfuric and phosphoric acid catalyze the reaction. the dehydration of alcohols yields alkene and water.
Therefore, the alcohol 2,3-dimethyl-2-butanol would undergo dehydration to produce a 2,3-dimethyl-2-butene and water.