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Contact Process
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Total cards: 5•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (5)
#1
Front (Question)
Describe the Contact Process
Back (Answer)
• 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
Front (Question)
Ideal conditions for Contact Process
Back (Answer)
Temperature: 450 degrees Pressure: 1 atmosphere Catalyst: Vanadium (V) Oxide
#3
Front (Question)
Uses of SO2
Back (Answer)
• manufacture of sulphuric acid • bleaching agent in wood pulp industry • good preservative
#4
Front (Question)
Uses of sulphuric acid
Back (Answer)
• make detergents • make fertilisers • make pigments + dyes • an electrolyte in car batteries
#5
Front (Question)
Raw materials in contact process:
Back (Answer)
Sulphur, air, water