Pearson Edexcel International GCSE (9–1) · CHEMISTRY · Section
Comparing the two methods of producing ethanol
20 practice questions
Practice questions
1–3 of 3 · Hard
Question 1
2 marks · Hard
Answer and see the solution →State one reason why ethanol produced by fermentation may need further processing, and one reason why ethanol produced by hydration of ethene is considered more efficient.
Question 2
5 marks · Hard
Answer and see the solution →A chemical company is choosing between fermentation and hydration of ethene to manufacture ethanol.
(a)[2 marks]State one raw material used in each method.
(b)[1 mark]Explain one environmental advantage of using fermentation rather than hydration to produce ethanol.
(c)[1 mark]Describe one disadvantage of fermentation compared to hydration of ethene for industrial production of ethanol.
(d)[1 mark]State one condition or feature of the hydration of ethene process that makes it more efficient industrially than fermentation.
Question 3
2 marks · Hard
Answer and see the solution →Give one reason why the fermentation method for producing ethanol is not as sustainable as it first appears, and one limitation of the hydration of ethene method for future production.