Ethanol is produced by the fermentation of glucose solution - Edexcel - GCSE Chemistry - Question 3 - 2013 - Paper 1
Question 3
Ethanol is produced by the fermentation of glucose solution.
(i) Describe how this fermentation is carried out.
(ii) Complete the word equation for the fermentatio... show full transcript
Worked Solution & Example Answer:Ethanol is produced by the fermentation of glucose solution - Edexcel - GCSE Chemistry - Question 3 - 2013 - Paper 1
Step 1
Describe how this fermentation is carried out.
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Answer
The fermentation of glucose involves adding yeast to the glucose solution. The yeast contains enzymes (such as zymase) that facilitate the conversion of glucose into ethanol and carbon dioxide under anaerobic conditions, meaning in the absence of air. This process typically occurs at a temperature of less than 40°C to ensure the enzymes remain active.
Step 2
Complete the word equation for the fermentation of glucose.
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Answer
glucose → ethanol + carbon dioxide
Step 3
Complete the sentence by putting a cross (✗) in the box next to your answer.
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Answer
C – fractional distillation
Step 4
State a possible harmful effect of consuming too many alcoholic drinks.
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Answer
One harmful effect of consuming too many alcoholic drinks is alcohol poisoning, which can result in serious health complications or death.
