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Cambridge IGCSE Chemistry practice

Paper 3 structured question: Formulae, functional groups and terminology

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Formulae, functional groups and terminology

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Paper 3Theory (Core)1 marks

Identify the general formula for carboxylic acids.

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General Formula for Carboxylic Acids

Carboxylic acids are characterized by the presence of a carboxyl group (-COOH).

  1. a

    State the general formula for carboxylic acids.

    Aim for approximately 1 distinct marking point.

    [1]

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Paper 3 structured question: Formulae, functional groups and terminology

Paper 3Theory (Core)1 marks

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General Formulae of Organic Compounds

The general formulae for various homologous series are as follows: - Alkanes: CnH2n+2 - Alkenes: CnH2n - Alcohols: CnH2n+1OH - Carboxylic Acids: CnH2n+1COOH

  1. a

    State the general formula for alkenes.

    Aim for approximately 1 distinct marking point.

    [1]