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Ethanol - Dehydration.
Why is Ethanol Dehydrated?
Ethanol can be dehydrated to make ethene.
This reaction is the reverse of the hydration of ethene.
Ethanol gas (vapour) is passed over a hot aluminium oxide catalyst.
ethanol ethene +
C2H5OH(l) C2H4(g) + H2O(l)
Ethene can also be made by cracking hydrocarbons.
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