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1.1 Formulae, equations and hazards

1.1 Formulae, equations and hazards

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Question 29

Industrial wastewater from a battery recycling facility contains dissolved lead(II) ions, Pb2+\text{Pb}^{2+}Pb2+, which represent a severe environmental hazard if discharged into local ecosystems. Sodium iodide is added to the wastewater to precipitate the lead as insoluble lead(II) iodide.

Complete the ionic equation for this precipitation reaction.

..................+2I−→.................. \text{..................} + 2\text{I}^- \rightarrow \text{..................} ..................+2I−→..................
[2]
Markscheme

1.1 Formulae, equations and hazards Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 Formulae, equations and hazards

230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.

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