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4 marksElectrochemistry

CSEC Chemistry · January 2010 · Paper 2 · Question 5(b)(i)

Chlorine is industrially manufactured by the electrolysis of brine.

Explain what occurs at the anode and the cathode in the electrolysis of brine.

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Other parts of this question

  1. 5(a)Explain how the tests above can be used to distinguish among the gases, hydrogen, chlorine and nitrogen. Include observations in your answer.[5 marks]
  2. 5(b)(ii)Write an ionic equation for the reaction which occurs at the anode.[2 marks]
  3. 5(b)(iii)Suggest why brine is used instead of dilute sodium chloride. Give an equation to justify your answer.[4 marks]

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