Reaction with metals

2 marks · Normal

Give the name and the molecular formula of the carboxylic acid with three carbon atoms.

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Propanoic acid, C3H6O2

Also accept: Propanoic acid, CH3CH2COOH

Common mistakes: Stating the wrong number of carbons; Writing incorrect formula

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Marking points

B1 · 1 mark · Correct name: propanoic acid.

A1 · 1 mark · Correct molecular formula: C3H6O2 or alternative correct structural formula.

Worked solution

Name: Propanoic acid

Molecular formula: C3H6O2

(Structural formula: CH3CH2COOH is accepted as equivalent.)