Chemistry 5070 · O Level · Redox

Redox — practice question

Gas X changes acidified potassium manganate(VII) from purple to colourless. Gas Y changes aqueous potassium iodide from colourless to brown. What do these observations indicate about gas X and gas Y?

  • Agas X: oxidising agent; gas Y: oxidising agent
  • Bgas X: oxidising agent; gas Y: reducing agent
  • Cgas X: reducing agent; gas Y: oxidising agent
  • Dgas X: reducing agent; gas Y: reducing agent

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