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Chemistry · Oct / Nov 2025 · Paper 11 · Question 22

5070Group VII properties

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

  1. Aaqueous potassium iodide: yes; aqueous potassium bromide: yes
  2. Baqueous potassium iodide: yes; aqueous potassium bromide: no
  3. Caqueous potassium iodide: no; aqueous potassium bromide: yes
  4. Daqueous potassium iodide: no; aqueous potassium bromide: no

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Correct answer: A. aqueous potassium iodide: yes; aqueous potassium bromide: yes

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