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2 marksRedox Equilibria

CAPE Chemistry Unit 1 · 2017 · Paper 2 · Question 2(a)

This section focuses on kinetics and equilibria, including electrochemistry.

Define the term 'standard electrode potential'.

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  1. 2(b)Identify the parts of the standard hydrogen electrode labelled A and B in Figure 2.[2 marks]
  2. 2(c)(i)Construct a labelled diagram to represent this cell and indicate the direction of electron flow when the cell is operating.[4 marks]
  3. 2(c)(ii)Write the relevant equations to represent the change taking place at the anode and the cathode. Anode: Cathode:[2 marks]
  4. 2(c)(iii)Write the balanced equation for the OVERALL cell reaction.[2 marks]
  5. 2(c)(iv)Refer to the data booklet to calculate the standard cell potential.[1 mark]
  6. 2(d)List TWO types of energy storage devices.[2 marks]

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