Reaction conditions

Question 1

Give the conditions for the steam hydration of ethene, to form ethanol.

Answer 1

T: 300 degrees Celcius
P: 70 atm pressure
C: concentrated sulfuric acid

Question 2

Give the conditions for fermentation of glucose.

Answer 2

T: - 25 - 42 degrees celcius
C: - enzymes from yeast or zymase
- neutral pH
- anaerobic conditions

Question 3

In the Haber Process, nitrogen in the air reacts with hydrogen in the presence of an iron catalyst to form ammonia.

State the rest of the conditions for the Haber Process.

Answer 3

T: - 450 degrees
P: - 200-1000atm
C: iron

Question 4

Give conditions for the formation of methanol from reaction of CO and H2.

Answer 4

• 50 atm
• 400 degrees
• chromium and zinc catalyst

Question 5

Give conditions for the contact process.

Answer 5

• 450 degrees
• 1-2 atms
• V2O5 catalyst

Question 6

Explain a niche reason why a high pressure is not used in the production of ethanol from hydration of ethene.-

Answer 6

• high pressures causes unwanted polymerisation of ethene into polyethene