The carboxyl functional group
The carboxyl functional group

A carboxylic acid is an organic compound containing the carboxyl functional group, -COOH\text{-COOH}-COOH. The group contains a carbon double-bonded to oxygen and single-bonded to hydroxyl, -OH\text{-OH}-OH.
Step-by-step lessons covering AQA GCSE Chemistry 7.2.4 Carboxylic acids for Foundation and Higher tier. Each lesson works through exam-style questions in Paper 1 and Paper 2 format. Nail the core quantitative topics — moles, balancing equations and calculations — early on, since they underpin higher-tier questions across every paper and topic.