O-LevelChemistryElectrolysis5070/11 · Oct/Nov 2024 · Q111 Mark

Aqueous copper(II) sulfate is electrolysed using copper electrodes. Which row describes the changes that take place during the electrolysis?

Amass of anode: increases, mass of cathode: decreases, colour of solution: becomes paler

Bmass of anode: increases, mass of cathode: decreases, colour of solution: stays the same

Cmass of anode: decreases, mass of cathode: increases, colour of solution: becomes paler

Dmass of anode: decreases, mass of cathode: increases, colour of solution: stays the same

✓ Correct answer

D: mass of anode: decreases, mass of cathode: increases, colour of solution: stays the same

Oracle Prep sorts past-paper questions by topic, so you can drill Electrolysis and see which topics are most likely to come up next.

Topic: Electrolysis, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2024 Paper 1 Variant 1, question 11.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content