SQA Higher Chemistry Practice Exam

Esters undergo hydrolysis in a reaction where they are broken down in the presence of water, typically in either acidic or basic conditions. During this process, the ester reacts with water, resulting in the formation of an alcohol and a carboxylic acid.

The mechanism involves the nucleophilic attack of water on the carbonyl carbon of the ester. This attack leads to the cleavage of the ester bond, producing these two products: the alcohol, which corresponds to the alcohol component of the original ester, and the carboxylic acid, which is derived from the acyl part of the ester. This reaction is fundamental in organic chemistry and is used in various applications, including the synthesis of compounds and in biochemistry processes, such as digestion.

Other options do not accurately represent the products of ester hydrolysis. For instance, an alcohol and a ketone are not typically produced from the hydrolysis of esters; similarly, the other combinations mentioned do not reflect the correct mechanistic pathway associated with ester hydrolysis.