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5 marksRedox Equilibria

CAPE Chemistry Unit 1 · 2007 · Paper 2 · Question 2(a)(i)

A student is attempting to find the cell potential of a Daniell (Zn/Cu) cell.

Outline the experimental steps he has to follow to obtain a reading of approximately 1.10 V on his voltmeter.

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Other parts of this question

  1. 2(a)(ii)Write the ionic half equation for the reaction occurring at EACH of the electrodes.[2 marks]
  2. 2(a)(iii)Identify the anode and the cathode.[1 mark]
  3. 2(a)(iv)Explain the direction of electron flow.[1 mark]
  4. 2(a)(v)Write the cell diagram.[1 mark]
  5. 2(a)(vi)Write the equation to represent the cell reaction.[1 mark]
  6. 2(b)Use the Eº value for each electrode (in the data booklet) to determine the Eºcell.[2 marks]
  7. 2(c)Suggest TWO changes which could be made to the cell in (a) to cause the cell potential to be greater than 1.10V.[2 marks]

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