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When Sulphur(IV)oxide is passed into solution of acidified tetraoxomanganate(VII), the colour changes from 

Chemistry
JAMB 2024

When Sulphur(IV)oxide is passed into solution of acidified tetraoxomanganate(VII), the colour changes from 

  • A. blue to green
  • B. pink to yellow
  • C. purple to colourless
  • D. Orange to green
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Correct Answer: Option C
Explanation

When sulphur dioxide (SO\(_2\) gas is passed through an acidified potassium permanganate (KMnO\(_4\)) solution, the solution changes from purple to colourless. This is because of a redox reaction, where KMnO\(_4\) acts as an oxidizing agent and SO\(_2\) acts as a reducing agent.

There is an explanation video available below.

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Explanation Video

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