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4.1 Predicting chemical reactions

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Question 13
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Bromine water is added to potassium iodide solution.

Br2+2KI→2KBr+I2 \mathrm{Br_{2} + 2KI \rightarrow 2KBr + I_{2}} Br2​+2KI→2KBr+I2​

Statement 1: Bromine is reduced.

Statement 2: Iodide ions are oxidised.

Statement 3: Potassium ions are not changed in the reaction.

Statement 4: Each iodide ion loses two electrons.

Which statements are correct?

[1]
A

1 and 2 only

B

1, 2 and 3 only

C

2, 3 and 4 only

D

1, 2, 3 and 4

Markscheme

4.1 Predicting chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Predicting chemical reactions

60 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.

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