A mixture of starch solution and potassium iodide was placed in a test tube. On…

Chemistry JAMB 1988

A mixture of starch solution and potassium iodide was placed in a test tube. On adding dilute tetraoxosulphate (lV) acid and then K2Cr2O7 solutions, a blue-black colour was produced. In this reaction, the?

  • iodide is oxidized
  • tetraoxosulphate (Vl) acid acts as an oxidizing agent
  • starch has been oxidized checkmark
  • K2Cr2O7 is oxidized

The correct answer is: C

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