CAIE IGCSE Chemistry 11.6.1 Ethanol Manufacture Questions
Work through real CAIE IGCSE Chemistry questions to write ethanol equations and compare fermentation with catalytic hydration of ethene.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- describe fermentation of aqueous glucose with yeast at about 25–35 °C in the absence of oxygen to produce ethanol and carbon dioxide
- state the fermentation equation and identify glucose, ethanol and carbon dioxide
- describe catalytic steam addition to ethene using an acid catalyst at about 300 °C and 6000 kPa or 60 atm
- compare the two ethanol-manufacture routes and identify their reactants, conditions, catalyst use and purification implications
CAIE IGCSE Chemistry 11.6.1 Ethanol Manufacture Questions question 1
[Maximum number: 1]
The flow chart shows the preparation of ethanol and some important chemistry of ethanol.
substance X fermentation ethanol process Y carbon dioxide + substance Z
What are X, Y and Z ?
X
Y
Z
yeast
combustion
oxygen
glucose
combustion
steam
glucose
polymerisation
water
yeast
fermentation
glucose
B
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