Contact Process Flashcards
1
Q
Describe the Contact Process
A
- Sulphur burns in air to form SO2
- SO2 is further oxidised to SO3 in the presence of vanadium (V) oxide
- SO3 is dissolved in concentration H2SO4 to give oleum
- Water is added to oleum
- Concentrated H2SO4 formed
2
Q
Ideal conditions for Contact Process
A
Temperature: 450 degrees
Pressure: 1 atmosphere
Catalyst: Vanadium (V) Oxide
3
Q
Uses of SO2
A
- manufacture of sulphuric acid
- bleaching agent in wood pulp industry
- good preservative
4
Q
Uses of sulphuric acid
A
- make detergents
- make fertilisers
- make pigments + dyes
- an electrolyte in car batteries
5
Q
Raw materials in contact process:
A
Sulphur, air, water
