Chemistry · Oct / Nov 2019 · Paper 12 · Question 11
5070Electrolysis
The diagram shows the apparatus for an electrolysis experiment. [diagram of electrolysis apparatus with inert electrodes and electrolyte] Using the apparatus shown, which electrolyte would give colourless gases at both electrodes?
- Aaqueous copper(II) sulfate
- Bconcentrated aqueous sodium chloride
- Cdilute sulfuric acid
- Dmolten lead bromide
As printed in the paper
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Correct answer: C. dilute sulfuric acid
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