- Contact + Haber Processes Flashcards
1
Q
Contact Process - Step 1
A
Sulfur + Oxygen –> Sulfur Dioxide
2
Q
Contact Process - Step 2
A
Sulfur Dioxide + Oxygen < – > Sulfur Trioxide
3
Q
Contact Process - Step 3
A
Sulfuric Acid + Sulfur Trioxide –> Oleum
Oleum + Water –> Sulfuric Acid
4
Q
Oleum Formula
A
H2S2O7
5
Q
Contact Process - Step 1 Conditions
A
- Combustion
- Excess air
6
Q
Contact Process - Step 2 Conditions
A
- Reversible
- Excess oxygen
- 450’C
- 1 atmosphere
- Vanadium Oxide Catalyst
7
Q
Contact Process - Step 3 Conditions
A
- Exothermic
- Oleum diluted in water
8
Q
Contact Process - Step 2 Reasons
A
- Low pressure favours high yield
- Low temperature favours high yield
- Catalyst compensates for low rate
9
Q
Haber Process
A
Nitrogen + Hydrogen –> Ammonia
10
Q
Haber Process Conditions
A
- 450’C
- 200 atmospheres
- Iron catalyst
- Reversible
11
Q
Haber Process Reasons
A
- Moderately low temperature favours medium yield (commercially viable) but low rate
- High pressure favours high yield
- Catalyst compensates for low rate
12
Q
Contact Process - Uses
A
- Manufacture of ammonium sulfate fertiliser
- Acid in vehicle batteries
- Making rayon, paints, dyes, plastics and detergents
- Concentrated sulfuric acid, dehydrating agent (sugar and hydrated copper sulfate)
13
Q
Haber Process - Uses
A
- Manufacture of ammonium fertilisers
