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1 markGroup IV Elements

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

Describe what should be observed when concentrated sodium hydroxide is added to solid lead(IV) oxide

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  1. 3(a)Complete Table 3 for the oxides of carbon and lead.[4 marks]
  2. 3(b)Explain the relative stabilities of the +2 oxidation states of the oxides of carbon and lead.[4 marks]
  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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