AQA · OCR A · Year 13
Ester and Acyl Chloride Equation Questions
Read explicit condensed formulae, name esters and write preparation and hydrolysis equations. Keep the carbon chain and acid/base form of each product correct.
Work it out, then check
Question 1 of 6
0 correct first time
Worked answer
Before the next question
C(=O) explicitly marks a carbonyl group in the condensed formulae. Direct esterification of an acid and an alcohol is reversible and acid catalysed. An acyl chloride reacts with an alcohol to give an ester and HCl. Alkaline hydrolysis gives a carboxylate salt rather than a neutral acid.
A worked example
CH₃C(=O)OCH₂CH₃ + NaOH → CH₃C(=O)O⁻ Na⁺ + CH₃CH₂OH. Ethyl ethanoate gives sodium ethanoate and ethanol.