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What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.
Recall the reaction by which benzoic acid can be produced: (a) reaction of an alkylbenzene with hot alkaline KMnO₄ and then dilute acid, exemplified by methylbenzene.
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Describe the reaction of carboxylic acids with PCl₃ and heat, PCl₅ or SOCl₂ to form acyl chlorides.
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Recognise that some carboxylic acids can be further oxidised: (a) the oxidation of methanoic acid, HCOOH, with Fehling's reagent or Tollens' reagent or acidified KMnO₄ or acidified K₂Cr₂O₇ to carbon dioxide and water; (b) the oxidation of ethanedioic acid, HOOCCOOH, with warm acidified KMnO₄ to carbon dioxide.
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Describe and explain the relative acidities of carboxylic acids, phenols and alcohols.
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Describe and explain the relative acidities of chlorine-substituted carboxylic acids.
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