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O-LevelChemistryAcids, Bases & Salts5070/11 · May/June 2019 · Q221 Mark

What is the best method to prepare a pure sample of copper(II) sulfate?

AAdd copper to aqueous zinc sulfate.
BAdd copper to dilute sulfuric acid.
CAdd copper(II) carbonate to aqueous sodium sulfate.
DAdd copper(II) oxide to dilute sulfuric acid.

✓ Correct answer

D: Add copper(II) oxide to dilute sulfuric acid.

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About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2019 Paper 1 Variant 1, question 22.

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