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The number of moles of consumed by one mole of glycerol (propane-1,2,3-triol) is

  1. A4
  2. B2
  3. C3
  4. D1

Answer: B

Glycerol has two vicinal C-C bonds, C1-C2 and C2-C3, both between carbons bearing OH. Each cleavage consumes one mole of HIO4, so two moles are used, giving two HCHO and one HCOOH.
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