Chemistry 9701 · AS & A Level · Hydrocarbons

Hydrocarbons — practice question

Two carbon-containing products are formed when alkene Z reacts with a hot, concentrated, acidified solution of potassium manganate(VII). One of the products gives an orange precipitate with 2,4-dinitrophenylhydrazine reagent. The other product is a gas that produces a white precipitate with aqueous calcium hydroxide. Which alkene could be alkene Z?

  • Abut-2-ene
  • B2-methylpropene
  • C2-methylbut-2-ene
  • Dpropene

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