A concentrated aqueous solution of sodium chloride (brine) is electrolysed using inert graphite electrodes.
Which row in the table correctly identifies the products formed at the electrodes and the nature of the remaining solution?
| Product at anode | Product at cathode | Remaining solution | |
|---|---|---|---|
| A | oxygen | sodium | acidic |
| B | chlorine | hydrogen | alkaline |
| C | chlorine | sodium | neutral |
| D | oxygen | hydrogen | alkaline |
Row A
Row B
Row C
Row D
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.