Chemistry · May / June 2017 · Paper 12 · Question 11
5070Electrolysis
Dilute sulfuric acid is electrolysed between inert electrodes. Which statements are correct? 1 Hydrogen is released at the negative electrode. 2 Oxygen is released at the positive electrode. 3 Sulfur dioxide is released at the positive electrode. 4 The acid becomes more concentrated.
- A1, 2 and 4
- B1 and 2 only
- C2 and 3
- D3 and 4
As printed in the paper
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Correct answer: A. 1, 2 and 4
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