Chemistry 9701 · AS & A Level · Electrochemistry

Electrochemistry — practice question

cis-but-2-ene is treated with cold, dilute, acidified potassium manganate(VII) solution to form product X. cis-but-2-ene is treated with hot, concentrated, acidified potassium manganate(VII) solution to form product Y. Which row gives the correct description of the reactions of X and Y?

  • Awhen sodium metal is added to separate samples of X and Y: both X and Y will react; when sodium hydroxide solution is added to separate samples of X and Y: neither X nor Y will react
  • Bwhen sodium metal is added to separate samples of X and Y: both X and Y will react; when sodium hydroxide solution is added to separate samples of X and Y: only one of X and Y will react
  • Cwhen sodium metal is added to separate samples of X and Y: only one of X and Y will react; when sodium hydroxide solution is added to separate samples of X and Y: neither X nor Y will react
  • Dwhen sodium metal is added to separate samples of X and Y: only one of X and Y will react; when sodium hydroxide solution is added to separate samples of X and Y: only one of X and Y will react

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