The electrolysis of some other solutions using inert electrodes
2 marks · NormalName the gases formed at the anode and at the cathode when dilute sulfuric acid is electrolysed with inert electrodes.
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Anode: oxygen; Cathode: hydrogen
Must show: Oxygen at anode, Hydrogen at cathode
Also accept: Anode: O2, Cathode: H2
Common mistakes: Saying hydrogen at the anode
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Marking points
B1 · 1 mark · Correct gas at anode: oxygen.
B2 · 1 mark · Correct gas at cathode: hydrogen.
Worked solution
The gases formed are: anode — oxygen; cathode — hydrogen.