Chemistry · Oct / Nov 2022 · Paper 12 · Question 16
5070Electrolysis
Dilute aqueous solutions of potassium chloride and magnesium chloride are mixed together. A sample of the mixture is electrolysed using inert electrodes. What are possible products at each of the electrodes?
- Aanode: chlorine, cathode: oxygen
- Banode: chlorine, cathode: potassium
- Canode: oxygen, cathode: hydrogen
- Danode: oxygen, cathode: magnesium
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Correct answer: C. anode: oxygen, cathode: hydrogen
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