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Edexcel IGCSE Chemistry 4.32C ethanol manufacture

Edexcel IGCSE Chemistry 4.32C ethanol manufacture
Edexcel IGCSE Chemistry syllabusChemistry 4CH1First assessment 2019

Practise ethanol-manufacture questions by completing fermentation equations, naming yeast and comparing industrial conditions.

How this is tested

  • Complete fermentation equations from glucose to ethanol and carbon dioxide.
  • State yeast, absence of air and about 30-40 °C for fermentation conditions.
  • Compare fermentation with ethene hydration using table data on feedstocks and conditions.

Question 4

Question 4(a)

(a)

Steam can be used to manufacture ethanol.

[ 3 ]

Question 4(a)(i)

(i)

Give the other reactant needed for this reaction.

[ 1 ]

Question 4(a)(ii)

(ii)

State the pressure and catalyst used for this reaction to manufacture ethanol.
pressure
catalyst

[ 2 ]

Question 4(b)

(b)

The glucose in grapes can be fermented to make ethanol.

[ 1 ]

Question 4(b)(i)

(i)

State the condition needed to prevent the formation of ethanoic acid.

[ 1 ]