When an aqueous solution of potassium nitrate, KNO3\text{KNO}_3KNO3, is electrolysed, the products formed at the electrodes are hydrogen and oxygen.
Explain the formation of these products at the electrodes.
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.