What are the first four members of the homologous series of carboxylic acids?

The first four members of the homologous series of carboxylic acids are methanoic acid, ethanoic acid, propanoic acid, and butanoic acid.

This question tests the recall of specific names of carboxylic acids, which is a fundamental aspect of understanding organic chemistry. It assesses the student's ability to remember and list the members of a homologous series. This response is aligned to Carboxylic acids because it explains recall the first four members of a homologous series of carboxylic acids as methanoic acid, ethanoic acid, propanoic acid and butanoic acid using the correct AQA GCSE Chemistry organic context. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams. This response is aligned to Carboxylic acids because it explains recall the first four members of a homologous series of carboxylic acids as methanoic acid, ethanoic acid, propanoic acid and butanoic acid using the correct AQA GCSE Chemistry organic context. Keep molecular formula, structural formula, displayed formula, and general formula distinct. Do not confuse alkanes with alkenes, saturated with unsaturated, cracking with combustion, polymers with monomers, or hydrocarbons with oxygen-containing alcohols and carboxylic acids. When formulae are used, preserve the stored notation exactly and explain the GCSE chemistry idea in words rather than using unsupported displayed-formula diagrams.