The reaction of which combination of reactants result in the formation of a hemiacetal?
A) aldehyde and alcohol
B) aldehyde and amine
C) aldehyde and carboxylic acid
D) aldehyde and water

Question

Quizplus · Accepted Answer

Hemiacetals are formed when an aldehyde reacts with an alcohol in the presence of an acid catalyst. Choice B involves the reaction of an aldehyde and an amine, which would form an imine. Choice C involves the reaction of an aldehyde and a carboxylic acid, which would form an acetal rather than a hemiacetal. Choice D involves the reaction of an aldehyde and water, which would form an alcohol rather than a hemiacetal.

The Reaction of Which Combination of Reactants Result in the Formation