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4 marksGroup IV Elements

CAPE Chemistry Unit 1 · 2015 · Paper 2 · Question 3(a)

The Group IV elements exhibit oxidation states of +2 and +4 in their compounds.

Complete Table 3 for the oxides of carbon and lead.

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Other parts of this question

  1. 3(b)Explain the relative stabilities of the +2 oxidation states of the oxides of carbon and lead.[4 marks]
  2. 3(c)(i)Describe what should be observed when concentrated sodium hydroxide is added to solid lead(IV) oxide[1 mark]
  3. 3(c)(ii)Describe what should be observed when concentrated hydrochloric acid is added to solid lead(IV) oxide.[2 marks]
  4. 3(d)Describe a test to identify Pb²⁺ ions in solution.[2 marks]

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