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3 marksChlorine

CAPE Chemistry Unit 2 · 2005 · Paper 2 · Question 6(c)

Describe how silver nitrate solution can be used to distinguish among the halide ions Cl-, Br- and I-.

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  1. 6(a)Explain how the temperature determines the products of the reaction between chlorine and aqueous sodium hydroxide, using equations to illustrate your answer.[9 marks]
  2. 6(b)Use the given redox potential values to explain the similarities and differences in the behaviour of the halogens with the thiosulphate (S2O3 2-) ion.[8 marks]

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