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How is alcohol consumption detected? -

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Question

How is alcohol consumption detected?

Short Note

Solution

  1. The person being tested blows through a tube, which bubbles the breath through a solution containing Sulphuric acid, Potassium dichromate, water, and silver nitrate.
  2. Oxidation of alcohol results in the reduction of dichromate to chromatic ions with a change in color from orange to green.
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Forensic Chemistry
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