O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2014 · Q21 Mark

Which compound when in aqueous solution will produce a red/brown precipitate on the addition of an aqueous solution of Fe3+ ions?

Ahydrogen chloride

Bsodium chloride

Csodium hydroxide

Dsulfur trioxide

✓ Correct answer

C: sodium hydroxide

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2014 Paper 1 Variant 1, question 2.

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