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Chemistry · May / June 2020 · Paper 12 · Question 25

5070Group VII properties

Chlorine is passed into separate samples of aqueous potassium iodide and aqueous potassium bromide. In which solutions is there a colour change?

  1. AKI(aq) ✓ KBr(aq) ✓
  2. BKI(aq) ✓ KBr(aq) ✗
  3. CKI(aq) ✗ KBr(aq) ✓
  4. DKI(aq) ✗ KBr(aq) ✗

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Correct answer: A. KI(aq) ✓ KBr(aq) ✓

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