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2 marksPeriodic Table and Periodicity

CSEC Chemistry · January 2011 · Paper 2 · Question 4(c)(ii)

Two samples of aqueous sodium bromide are treated with chlorine gas and solid iodine as shown in Experiments 1 and 2 in Figure 4.

Write a balanced equation, where appropriate, for the reaction occurring in (c) (i) above.

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Other parts of this question

  1. 4(a)Outline what happens in EACH step.[4 marks]
  2. 4(b)(i)Outline the reason for the change in atomic radius from magnesium to barium.[2 marks]
  3. 4(b)(ii)Barium reacts more readily with water than magnesium does. With reference to the data in Table 2, explain this observation.[2 marks]
  4. 4(c)(i)State whether a reaction would take place in EACH case.[2 marks]
  5. 4(d)(i)Describe a test that can be used to identify the solution formed with sulphur dioxide.[2 marks]
  6. 4(d)(ii)Write a balanced equation to support the use of this test.[1 mark]

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