Ethanol_Worksheets_with_answers

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ETHANOL
ETHANOL
Rearrange the anagrams above to
show where our ethanol comes from.
Ethanol can be made by two processes,
ethene reacting with ……………. under
pressure in the presence of a
………………., or the fermentation of
…………..…. using enzymes in ………………..
Word bank: catalyst, sugar, yeast, steam
Complete these equations:
………………. + Water
C2H4
Glucose
…………….
+ H2O
yeast
yeast
catalyst
catalyst
Ethanol
.…………..
Ethanol + ………………………
2 C2H5OH + ………………
Fermentation
Hydration
Why is a continuous process better than a batch
process for making a product in industry?
………………………………………………………………………………
………………………………………………………………………………
Is ethanol a hydrocarbon?
………….
Explain your answer
………………………….................
.............................................
…………………………………….....
Draw the structural formula
for ethanol C2H5OH below:
Fermentation produces CO2 gas as a by-product. Fortunately
it is a carbon neutral process. What does this mean?
……………………………………………………………………………………………
……………………………………………………………………………………………
Use the table to compare
advantages and disadvantages
of making ethanol by
fermentation versus hydration
Delete wrong answer
Fermentation: Continuous / Batch
Hydration: Continuous / Batch
Answers
Carbon dioxide
Crude oil
Photosynthesis
Distillation
Glucose
Cracking
Fermentation
Hydration
ETHANOL
ETHANOL
Rearrange the anagrams above to
show where our ethanol comes from.
Ethanol can be made by two processes,
ethene reacting with steam under
pressure in the presence of a catalyst,
or the fermentation of sugar using
enzymes in yeast.
Word bank: catalyst, sugar, yeast, steam
Complete these equations:
Ethene + Water
C2H4
Glucose
C6H12O6
+ H2O
yeast
yeast
catalyst
catalyst
Ethanol
C2H5OH
Ethanol + Carbon Dioxide
2 C2H5OH + 2CO2
Why is a continuous process better than a batch
process for making a product in industry? There is
no downtime – a continuous process runs 24hrs a
day, 7 days a week.
Fermentation:
Hydration:
Draw the structural formula
Is ethanol a hydrocarbon?
for ethanol C2H5OH below:
No
Explain your answer
Hydrocarbons contain hydrogen
and carbon only. There is also an
oxygen atom in ethanol.
Overall the level of CO2 in the atmosphere remains unchanged as
when the sugar cane is grown it removes carbon dioxide from the
atmosphere by photosynthesis.
Fermentation produces CO2 gas as a by-product. Fortunately
it is a carbon neutral process. What does this mean?
Use the table to compare
advantages and disadvantages
of making ethanol by
fermentation versus hydration
Delete wrong answer
Batch
Continuous

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