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7.2 Group 7

7.2 Group 7

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Question 44

Bromine reacts with sodium iodide to form sodium bromide and iodine. In this reaction, bromine forms bromide ions.

Br2+2NaI→2NaBr+I2 \text{Br}_2 + 2\text{NaI} \rightarrow 2\text{NaBr} + \text{I}_2 Br2​+2NaI→2NaBr+I2​

In this reaction, bromine has been reduced.

Explain, using the equation, how you know that bromine has been reduced.

[2]
Markscheme

7.2 Group 7 Questions

  1. GCSE
  2. /Chemistry
  3. /7.2 Group 7

106 exam-style questions on Edexcel GCSE Chemistry 7.2 Group 7, covering 7.2.1 Physical properties of the halogens, 7.2.2 Reactions of the halogens, 7.2.3 Relative reactivity and displacement reactions of the halogens, and 7.2.4 Halogen displacement as a redox reaction. Each one has a worked solution and a mark scheme showing where the marks go.

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