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Unit 2

What is the colour change that occurs when alcohols are oxidised? orange to green
What are the products when a primary alcohol is oxidised? aldehyde (distillation) carboxylic acid (reflux)
What are the products when a secondary alcohol is oxidised? ketone
What are the products when a tertiary alcohol is oxidised? none, resistant to oxidation
Properties of alcohols low volatility and high boiling points-compared to alkanes
Why? hydrogen bonds
Solubility first 3 dissolve in water, form hydrogen bonds between OH- and H20. Large alcohols the carbon chain is too long, non polar.
How is ethanol manufactured? steam hydration (of ethene) with an acid catalyst. 300C and 6atm
How else is ethanol manufactured? fermentation of glucose 37C and yeast produces CO2
Ethanol is used for... alcoholic drinks biofuel
methylated sprits industrial solvent
methanol chemical feedstock unleaded petrol
Created by: 07blandforderin