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1 markAcids, Bases and Salts

CSEC Chemistry · May/June 2007 · Paper 2 · Question 2(d)(i)

When exposed to air for some time, copper ornaments become tarnished by green copper carbonate.

Suggest the name of a common household chemical that can be used to clean such tarnished copper ornaments.

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Other parts of this question

  1. 2(a)(i)Classify Solution A as an oxidizing or a reducing agent in Experiments 1 and 2. Experiment 1: A is acting as... Experiment 2: A is acting as...[2 marks]
  2. 2(a)(ii)Using the information given in Table 3 only, explain your answer to (a) (i) above. Experiment 1: Experiment 2:[4 marks]
  3. 2(b)(i)Write a balanced ionic equation to represent the reaction that occurs in Experiment 4.[2 marks]
  4. 2(b)(ii)Account for the pale blue solution that is observed in Experiment 4.[1 mark]
  5. 2(c)With reference to the electrochemical series, predict what you may be expected to observe in Experiment 3. Give a reason for your answer.[3 marks]
  6. 2(d)(ii)Write a suitable ionic equation to show the reaction in (d) (i) above.[2 marks]

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