CAIE A Level Chemistry 9701 · Hydrocarbons
An alkene with molecular formula is treated with hot concentrated acidified potassium manganate(VII) (). The only organic products obtained are propanone and ethanoic acid.
Explain how the identities of these products allow the position of the carbon-carbon double bond in the original alkene to be determined.
4 marks, so the mark scheme is looking for about 4 separate creditworthy points. Making the same point twice in different words earns it once.
Explain means: Give the reasons or the mechanism: why or how something happens. Link each point to the next with because, so or which means. A list of facts with no links usually loses the reasoning marks.
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