Ethanol

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What are the 2 ways that ethanol can be produced?
Fermentation and Hydration.
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Describe and explain how ethanol is made by fermentation
Glucose (sugar) from plants is fermented. Enzymes in yeast break down the sugar into ethanol and carbon dioxide.
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Describe and explain how ethanol is made by hydration
Ethene is made when crude oil is cracked. Ethene reacts with steam in the presence of a catalyst to create ethanol.
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What is a catalyst?
A catalyst is a substance that increases the rate of a reaction without being used up in the reaction.
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Advantages of making ethanol by fermentation
Sugar plants are renewable.
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Disadvantages of making ethanol by fermentation
Fermentation is a batch process which takes a lot longer, carbon dioxide is released.
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Advantages of making ethanol by hydration
Hydration is a continuous process therefore much faster, no carbon dioxide released.
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Disadvantages of making ethanol by hydration
Ethene is made from crude oil which is non-renewable.
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Other cards in this set

Card 2

Front

Describe and explain how ethanol is made by fermentation

Back

Glucose (sugar) from plants is fermented. Enzymes in yeast break down the sugar into ethanol and carbon dioxide.

Card 3

Front

Describe and explain how ethanol is made by hydration

Back

Preview of the front of card 3

Card 4

Front

What is a catalyst?

Back

Preview of the front of card 4

Card 5

Front

Advantages of making ethanol by fermentation

Back

Preview of the front of card 5
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