Electrodes are placed into three different aqueous solutions, XXX, YYY, and ZZZ. A low-voltage direct current (d.c.) power supply is connected to the electrodes. Any products formed at the anode and cathode are identified. The results are shown in the table below.
| Solution | Conducts electricity | Product at cathode | Product at anode |
|---|---|---|---|
| XXX | Yes | Silver | Oxygen |
| YYY | Yes | Hydrogen | Chlorine |
| ZZZ | No | None | None |
Explain which solutions are electrolytes.
Practise Edexcel GCSE Chemistry Electrolytic processes with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.