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4 marksElectrochemistry

CSEC Chemistry · May/June 2016 · Paper 2 · Question 2(b)(v)

Jaden performed tests and recorded observations in Table 3. You will use this information to answer subsequent questions.

With reference to the electrochemical series, explain the difference in observations between Tests 3 and 4.

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Other parts of this question

  1. 2(a)Distinguish between an 'oxidizing agent' and a 'reducing agent' in terms of electron gain or loss.[2 marks]
  2. 2(b)(i)State an oxidizing agent that is NOT mentioned in Table 3.[1 mark]
  3. 2(b)(ii)Identify whether Solution C is acting as an oxidizing or reducing agent in Test 1 and Test 2.[2 marks]
  4. 2(b)(iii)With reference to oxidation states, explain EACH of your answers in (b) (ii).[4 marks]
  5. 2(b)(iv)Write an ionic equation (with state symbols) for the reaction which took place in Test 3.[2 marks]

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