Alcohols

• Carboxylic acid + Alcohol (+ acid catalyst) -> Ester
• Alcohol has a functional group of -OH
• To test for an alcohol:

  1. You put potassium dichromate into a warm water bath.
  2. Add to alcohol and turn green
• Uses of alcohols

  > Drinks

  > Biofuel

  > Mouthwash

  > Aftershave
• Fermentation= When enzymes in yeast turn glucose into ethanol + carbon dioxide
• Fermentation word equation

  (Yeast)

  Glucose ------> Ethanol + Carbon dioxide
• Combustion word equation (alcohols)

  Ethanol + Oxygen -> Carbon dioxide + water
• Properties of alcohols

  > Highly flammable

  > High amount of energy

  > Clean flame
• General formula of an alcohol

  CnH2n+1 OH
• Alcohols:

  A) Methanol

  B) Ethanol

  C) Propanol

  D) Butanol

  
• Oxygen in the air can oxidise the alcohol and turn it into a carboxylic acid (ethanol -> vinegar)