Displacement reactions involving the halogens

1 mark · Normal

Which mixture will result in a visible colour change, indicating a displacement reaction?

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Correct option: Chlorine solution and potassium bromide solution

Common mistakes: Selecting cases with no displacement

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Marking points

B1 · 1 mark · Correct option selected: Chlorine solution and potassium bromide solution.

Worked solution

Chlorine is more reactive than bromine and will displace it from potassium bromide solution, causing a colour change.