Reaction with metals

1 mark · Normal

Which statement best describes a weak acid such as ethanoic acid?

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Correct option: It ionises partially in water.

Common mistakes: Choosing 'completely ionises' as for strong acids

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Marking points

B1 · 1 mark · Correctly selects 'It ionises partially in water.'

Worked solution

Ethanoic acid is a weak acid because it ionises only partially in water and only a small fraction of its molecules produce ions.