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6 marksAcidic and Basic Character of Organic Compounds

CAPE Chemistry Unit 2 · 2005 · Paper 2 · Question 2(a)

Four bottles of Group II metal sulphates (Mg, Ca, Sr, Ba) have lost their labels.

Outline a plan by which a chemist, without access to flame test rods, could use physical properties to identify the four Group II metal sulphates (Mg, Ca, Sr, Ba).

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Other parts of this question

  1. 2(b)(i)Describe the environmental conditions under which a photographer would have decided to use the reaction of heating magnesium in air.[1 mark]
  2. 2(b)(ii)Suggest ONE disadvantage of using the reaction of magnesium burning in air for photography.[1 mark]
  3. 2(b)(iii)Write the chemical equation to illustrate the reaction of magnesium burning in air.[2 marks]

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