A-LevelChemistryEquilibria9701/12 · May/June 2010 · Q341 Mark

When organic refuse decomposes in water carboxylic acids are formed. The water becomes acidic and aquatic life is destroyed. Which additives are suitable to remove this acid pollution? 1 calcium carbonate 2 calcium hydroxide 3 potassium nitrate

A1, 2 and 3 are correct

B1 and 2 only are correct

C2 and 3 only are correct

D1 only is correct

✓ Correct answer

B: 1 and 2 only are correct

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Topic: Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2010 Paper 1 Variant 2, question 34.

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