Alcohols
- Created by: EmanB
- Created on: 26-01-14 22:27
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- Alcohols
- Ethanol
- Fermentation
- Sugar/starch, ethanol conc. 14% alcohol
- Anaerobic, prevents oxidation
- In solution, low temps., presence of yeast, catalysed by zymase
- Slow at temps below 25, above 37: enzyme denatures
- Enzyme ceases to function above alcohol conc of 14%
- C6H12O6 --> 2CH3CH2OH + 2CO2
- Enzyme ceases to function above alcohol conc of 14%
- Sugar/starch, ethanol conc. 14% alcohol
- Hydration
- Steam, phosphoric acid, H2PO4
- Reversible, conversion of ethene incomplete, 5% converted to ethanol
- Unreacted gases recycled, 95% conversion acheived
- C2H4 + H2O --> CH3CH2OH
- Fermentation
- Properties
- High MP/BP
- Able to form hydrogen bonds
- Soluble in water
- Forms hydrogen bonds with water molecules
- Longer the chain of hydrocarbons, less soluble
- Low volatility
- Doesn't vaporise that easily
- High MP/BP
- Ethanol
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