O-LevelChemistryAcids, Bases & Salts5070/11 · May/June 2011 · Q31 Mark

The diagrams show an experiment with aqueous ammonium chloride. A gas, Y, is produced and the litmus paper changes colour. What are solution X and gas Y?

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Aaqueous sodium hydroxide, ammonia

Baqueous sodium hydroxide, chlorine

Cdilute sulfuric acid, ammonia

Ddilute sulfuric acid, chlorine

✓ Correct answer

A: aqueous sodium hydroxide, ammonia

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2011 Paper 1 Variant 1, question 3.

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