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Introduction to General, Organic and Biochemistry
Answer true or false.
(a) The two most important reactions of alcohols are their acid-catalyzed dehydration to give alkenes and their oxidation to aldehydes, ketones, and carboxylic acids.
(b) The acidity of alcohols is comparable to that of water.
(c) Water-insoluble alcohols and water-insoluble phenols react with strong bases to give watersoluble salts.
(d) Acid-catalyzed dehydration of cyclohexanol gives cyclohexane.
(e) When the acid-catalyzed dehydration of an alkene can yield isomeric alkenes, the alkene with the greater number of hydrogens on the carbons of the double bond generally predominates.
(f) The acid-catalyzed dehydration of 2-butanol gives predominantly 1-butene.
(g) The oxidation of a primary alcohol gives either an aldehyde or a carboxylic acid depending on experimental conditions.
(h) The oxidation of a secondary alcohol gives a carboxylic acid.
(i) Acetic acid, $\mathrm{CH}_{3} \mathrm{COOH}$, can be prepared from ethylene, $\mathrm{CH}_{2}=\mathrm{CH}_{2}$, by treatment of ethylene with $\mathrm{H}_{2} \mathrm{O} / \mathrm{H}_{2} \mathrm{SO}_{4}$, followed by treatment with $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} / \mathrm{H}_{2} \mathrm{SO}_{4}$
(j) Treatment of propene, $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}_{2}$, with $\mathrm{H}_{2} \mathrm{O} /$
$\mathrm{H}_{2} \mathrm{SO}_{4}$ followed by treatment with $\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{2} / \mathrm{H}_{2} \mathrm{SO}_{4}$
gives propanoic acid, $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COOH}$
