Displacement reactions as redox reactions

2 marks · Easy

Write the balanced ionic equation, including state symbols, for the displacement reaction when chlorine gas is bubbled through a solution of sodium fluoride.

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No reaction occurs. Cl2(aq) + 2F−(aq) → No reaction, as fluorine is more reactive than chlorine.

Must show: states no reaction, explanation based on reactivity

Also accept: No reaction.; No change occurs.

Common mistakes: Cl2(aq) + 2F−(aq) → 2Cl−(aq) + F2(aq)

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Marking points

M1 · 1 mark · Considers the reactivity order of halogens correctly.

A1 · 1 mark · Correctly states that there is no reaction as chlorine cannot displace fluoride ions.

Worked solution

Fluorine is more reactive than chlorine, so chlorine cannot displace fluoride ions.

Ionic equation: No reaction occurs.