Comparing the two methods of producing ethanol
1 mark · EasyState one disadvantage of producing ethanol using fermentation instead of the hydration of ethene.
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It is slower.
Also accept: Takes several days for each batch; Produces impure ethanol; Less efficient; Batch process is inefficient; Needs further processing to purify the ethanol; Fermentation is much slower than hydration
Common mistakes: States an advantage instead (e.g. uses renewable resources)
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Marking points
B1 · 1 mark · States any valid disadvantage of fermentation compared to hydration, e.g. 'It is slower', 'Produces impure ethanol', or similar.
Worked solution
One disadvantage is that fermentation is much slower than hydration of ethene.