Question

1. Write a balanced equation for the conversion of sucrose into ethanol. 2. By doing some library research, see whether you can find the commercial method or methods used to produce absolute ethanol. 3. Why is the air trap necessary in the fermentation? 4. How does acetaldehyde impurity arise in the fermentation? 5. The diethylacetal of acetaldehyde can be detected by gas chromatography. How does this impurity arise in fermentation? 6. Calculate how many milliliters of carbon dioxide would be theoretically produced from 20 g of sucrose at 25°C and 1 atmosphere pressure.

Answer 1

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