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How would you bring about the following conversions? Name the process and write the reaction involved.
(a) ethanol to ethene.
(b) propanol to propanoic acid.
Write the reactions.
(a) Ethanol can be converted into ethene by the dehydration reaction.
The chemical equation for the reaction is given below:
$CH_3-CH_2OH → CH_2=CH_2 + H_2O$
When ethanol is heated with concentrated sulphuric acid at 170oC, ethanol gets dehydrated to form ethene, an unsaturated hydrocarbon.
Concentrated sulphuric acid acts as the dehydrating agent in this reaction.
(b) Propanol is converted into propanoic acid by the oxidation reaction.
The chemical equation for the reaction is given below:
$CH_3-CH_2-CH_2-OH → CH_3CH_2COOH$
Propanol is oxidized to propanoic acid in the presence of alkaline potassium permanganate solution (alkaline KMnO4) which acts as an oxidizing agent as it adds oxygen to convert propanol to propanoic acid.
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