The carboxyl group and its relatives
The carboxyl group and its relatives

A carboxylic acid contains the carboxyl group, −COOH-COOH−COOH, usually written as RCOOHRCOOHRCOOH. The acidic hydrogen is the one on the O−HO-HO−H bond, not on the carbon chain.
Step-by-step lessons covering Edexcel A Level Chemistry Carboxylic acids and derivatives for A Level Chemistry. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build confidence with atomic structure, bonding and moles calculations early on, since these underpin the more demanding organic mechanisms, equilibrium and practical-analysis topics that dominate Year 2.