A-LevelChemistryHydroxy compounds9701/12 · May/June 2022 · Q331 Mark
Primary alcohols can be oxidised to aldehydes using either acidified potassium dichromate(VI) or acidified potassium manganate(VII). The reaction mixtures change colour as the oxidising agent is reduced. What are the colour changes seen?
Agreen, orange, purple, colourless
Borange, green, colourless, purple
Corange, green, purple, colourless
Dpurple, colourless, orange, green
✓ Correct answer
C: orange, green, purple, colourless
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