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2 marksRedox Equilibria

CAPE Chemistry Unit 1 · 2015 · Paper 2 · Question 2(b)(i)

Consider the following (unbalanced) equation which describes the process that is taking place in an electrochemical cell under standard conditions: Al(s) + Sn²⁺(aq) → Al³⁺(aq) + Sn(s)

Write the ionic half-equation for the reaction taking place at EACH of the electrodes. ANODE: CATHODE:

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Other parts of this question

  1. 2(a)(i)Define the term: Standard electrode potential of a half-cell[2 marks]
  2. 2(a)(ii)Define the term: Standard cell potential of an electrochemical cell[2 marks]
  3. 2(b)(ii)Write the cell diagram.[1 mark]
  4. 2(b)(iii)Draw a well-labelled diagram of the electrochemical cell. Indicate the direction of electron flow.[6 marks]
  5. 2(b)(iv)For EACH electrode shown in Table 2, select the Eº value to determine the Ecell.[2 marks]

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