Chemistry mechanisms

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1. How would you test for an aldehyde and what would you see?

  • Acidified potassium dichromate
  • Tollens reagent, orange to green
  • Tollens reagent, silver mirror
  • Fehlings, silver mirror
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2. Alkene to haloalkane

  • direct hydration
  • electrophilic addition
  • hydrogenation
  • fermentation

3. What would use to oxidise and alcohol

  • acidified K2Cr2O7
  • potassium dichromate
  • aqueous potassium dichromate
  • HCl

4. alcohol can produce what 3 products in 1 process

  • nitrile, amine, ketone
  • ketone, alkyl hydrogen sulphate, glucose
  • aldehyde, ketone, alkene
  • alkene, ketone, amine

5. Haloalkane to amine

  • nucleophilic substitution
  • hydration
  • elimination
  • electrophilic addition

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