Alcohol

Beschreibung

A Levels Chemistry Mindmap am Alcohol, erstellt von elspeth96 am 02/04/2014.
elspeth96
Mindmap von elspeth96, aktualisiert more than 1 year ago
elspeth96
Erstellt von elspeth96 vor etwa 10 Jahre
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Zusammenfassung der Ressource

Alcohol
  1. -OH Functional Group
    1. Soluble due to -OH group forming hydrogen bonds with water
      1. Hydrogen bonding reduces volatility (Higher Bp)
        1. Solubility decreases with larger length chains. Long Chains disrupt hydrogen bonding between other water molecules
        2. CnH2n+1OH
          1. Ethanol C2H5OH
            1. Hydration of Ethene
              1. 100% Atom Economy
                1. Steam and Ethene with phosphoric acid catalyst
                2. Fermentation of sugars
                  1. Involving yeast
                    1. Anaerobic respiration - without oxygen
                      1. Exothermic reaction
                        1. Fermentation stops at 15% as the ethanol kills yeast
                          1. Distillation required to increase the concentration
                      2. Reactions With:
                        1. Primary Alcohols
                          1. Gentle Heating under distillation. Acidified dichromate [O]
                            1. Aldehyde and water
                              1. -CHO Group
                              2. Rotting apples odour
                              3. Strong heating under reflux. Excess 2[O] acidified dichromate.
                                1. Carboxylic Acid and Water
                                  1. -COOH Group
                                  2. Vinegar Odour
                                    1. Turns Litmus paper red
                                  3. Secondary Alcohols
                                    1. Reflux with excess 2[O] acidified dichromate
                                      1. Ketone
                                        1. -COC- Group
                                        2. Fruity Odour
                                      2. Alcohol and Ethanoic acid
                                        1. Ester and water
                                          1. E.g. CH3CH2OOCCH3
                                          2. Fruity Smell
                                          3. Colour change from Orange to Green
                                          4. Tertiary Structures cannot be oxidised
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