Displacement reactions as redox reactions
2 marks · HardComplete the ionic equation, including state symbols, for the reaction of fluorine gas with potassium bromide solution.
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2Br^−(aq) + F_2(aq) → 2F^−(aq) + Br_2(aq)
Also accept: 2Br^-(aq) + F_2(aq) → 2F^-(aq) + Br_2(aq)
Common mistakes: Omitting state symbols or spectator ions included; Incorrect balancing
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Marking points
M1 · 1 mark · Writes out all correctly participating ions and fluorine as molecule.
A1 · 1 mark · States correct equation with complete and correct state symbols, and omits spectator ions.
Worked solution
Fluorine displaces bromide ions from solution.