Comparing the two methods of producing ethanol
3 marks · EasyThe table below compares some features of ethanol production by fermentation and by hydration of ethene.
| Feature | Fermentation | Hydration of ethene |
|---|---|---|
| Raw material | Sugar beet or corn (renewable) | Ethene (from oil, non-renewable) |
| Process type | Batch | Continuous |
| Speed | Slow | Fast |
Which process uses a renewable raw material?
What type of process is the hydration of ethene?
Compare the speed of ethanol production in both methods.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Fermentation (uses renewable raw material)
(b) Continuous process
(c) Fermentation is slow; hydration of ethene is fast.
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Marking points
B1a (a) · 1 mark · Correctly identifies fermentation as using renewable raw materials.
B1b (b) · 1 mark · Correctly states hydration of ethene is continuous.
B1c (c) · 1 mark · Correctly compares speed (fermentation slow, hydration fast).
Worked solution
(a) Fermentation uses a renewable raw material.
(b) Hydration of ethene is a continuous process.
(c) Fermentation is slow; hydration of ethene is fast.