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Chemistry · May / June 2018 · Paper 11 · Question 13

5070Electrolysis

The diagrams show an electrolysis experiment using inert electrodes. [diagrams: before electrolysis and after electrolysis, with liquid Y labelled] What could liquid Y be?

  1. Aaqueous copper(II) sulfate
  2. Bconcentrated aqueous sodium chloride
  3. Cdilute sulfuric acid
  4. Dethanol

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Correct answer: C. dilute sulfuric acid

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