Manufacture of Ethanol

What is used in the production of ethanol from ethene?

• Hydrogen and oxygen

• Oxygen only

• Steam

• Yeast

Which term describes the formation of ethanol from glucose?

• Cracking

• Distillation

• Fermentation

• Polymerisation

Which statement about ethanol is correct?

• It burns in air to form ethene and water.

• It is prepared from ethene by fermentation.

• It is prepared from glucose in an addition reaction.

• It is the only product when ethene reacts with steam.

Ethanol can be formed by:

1 Fermentation

2 Reaction between steam and ethene

Which of these processes uses a catalyst?

• 1 & 2

• 1 only

• 2 only

• Neither 1 nor 2

The flow chart shows the preparation of ethanol and some important chemistry of ethanol.

What are X, Y and Z?

• X: Ethane

  Y: Combustion

  Z: Yeast

• X: Glucose

  Y: Combustion

  Z: Steam

• X: Water

  Y: Polymerisation

  Z: Water

• X: Yeast

  Y: Fermentation

  Z: Glucose