Friday, 1 April 2016

3.12 describe the dehydration of ethanol to ethene, using aluminium oxide

If you have ethanol and you want ethene, you can dehydrate it. This is done by removing water from the ethanol and is known as a dehydration reaction. 

Method
Ethanol vapour is passed over a hot catalyst (aluminium oxide, Al2O3)


NOTE: The catalyst is used as it provides a large surface area for the reaction to take place, meaning the reaction will be quick(ish)

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