A-LevelChemistryGroup 179701/12 · May/June 2021 · Q161 Mark

Which row gives mixtures that both result in the oxidation of a halide ion?

Amixture 1: AgNO₃(aq) and NaCl(aq), mixture 2: concentrated H₂SO₄(aq) and HI(aq)

Bmixture 1: Br₂(aq) and NaCl(aq), mixture 2: concentrated H₂SO₄(aq) and HCl(aq)

Cmixture 1: Cl₂(aq) and NaBr(aq), mixture 2: CH₃CHBrCH₃(l) + NaOH (ethanolic)

Dmixture 1: Br₂(aq) and NaI(aq), mixture 2: concentrated H₂SO₄(aq) and NaBr(s)

✓ Correct answer

D: mixture 1: Br₂(aq) and NaI(aq), mixture 2: concentrated H₂SO₄(aq) and NaBr(s)

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Topic: Group 17, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, May/June 2021 Paper 1 Variant 2, question 16.

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