Esters!

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  • Esters
    • Alcohols
      • Alcohols react with carboxylic acids to produce esters
        • Alcohols are CH3CH2OH
        • Carboxylic acid are CH3COOH
          • Alcohols are CH3CH2OH
      • Alcohols contain function group -OH
        • Methane, Ethane and Propanol are the first three members of a homologous series of alcohols
          • These three all:
            • Are used as a fuel and solvents
              • Burn in the air
                • Dissolve in water to form a neutral solution
            • Burn in the air
              • Dissolve in water to form a neutral solution
            • React with sodium to produce hydrogen
              • Are used as a fuel and solvents
              • Ethanol is the main alcohol in alcoholic drinks
                • React with sodium to produce hydrogen
                  • Ethanol can be oxidised to ethanoic acid either by  chemical oxdising agents or by microbial action
                    • Ethanol acid is the main acid in vinegar
        • Carboxylic Acids
          • Ethanoic acid is a member of the carboxylic acid, which have functional group -COOH
          • Know that Carboxylic acids are:
            • Dissolve  in water to produce acidic solutions
            • React with carbonates to produce carbon dioxide
            • React with alcohols in presence of an  acid catalyst to produce esters
            • Do not ionise completely when dissolved in water and so are weak acid
            • Aqueous solutions of weak acids have a higher pH value than aqueous solutions of strong acids, with the same concentartion
        • Esters
          • Ethyl ethanoate is the ester produced from ethanol and ethanoic acid
          • Esters have the functional groups -COO-
            • They are voltile compounds with distinctive smells and are   used as flavorings and prefumes
      • These three all:
        • Ethanol is the main alcohol in alcoholic drinks
          • Ethanol can be oxidised to ethanoic acid either by  chemical oxdising agents or by microbial action
            • Ethanol acid is the main acid in vinegar

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