The set –up below was used to electrolyse aqueous copper (II) sulphate.

The set –up below was used to electrolyse aqueous copper (II) sulphate.

a) Explain why the bulb light brightly at the beginning of the experiment and becomes dim after sometimes.
b) Write the ionic equation of the reaction that took place at the cathode.

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a) Because concentration of ions is high at the beginning and decreases as the ions are discharged during
electrolysis

b) Cu$_{(aq)}^{2+} + 2e \rightarrow Cu_{(s)}$

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johnmulu answered the question on April 27, 2017 at 07:37

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