O-LevelChemistryElectrolysis5070/11 · May/June 2010 · Q111 Mark

The diagram shows the electrolysis of a concentrated aqueous solution containing both copper(II) ions and sodium ions. Which metal is deposited at the negative electrode and why?

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Acopper, copper is less reactive than sodium

Bcopper, copper is more reactive than hydrogen

Csodium, copper is less reactive than hydrogen

Dsodium, copper is more reactive than sodium

✓ Correct answer

A: copper, copper is less reactive than sodium

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Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2010 Paper 1 Variant 1, question 11.

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