Reaction Conditions: Gaining Maximum Marks
Reaction
Cracking
(Making
smaller
hydrocarbon)
Haber
Process
(Making
Ammonia)
Fermentation
(Making
Ethanol)
Paper 2
Hydration of
Ethene
(Making
Ethanol)
Paper 2
Contact
Process
(Making
Sulphuric
Acid)
Paper 2
Details
 600 – 700 0C
 Silica/Alumina catalyst
(Remember: This is a method to make
alkenes such as ethene which can be used
to make polymers)
 450 0C
 200 atm
 Iron catalyst
 N2 + 3H2 ⇄ 2NH3
(Remember: Unused gases are recycled and
ammonia is liquefied)
 30 0C
 Anaerobic conditions
 Yeast catalyst
 C6H12O6 → 2C2H5OH + 2CO2
(Remember: Low temps otherwise enzymes
in yeast denature)
 300 0C
 60 – 70 atm
 Phosphoric acid catalyst
 CH2=CH2 + H2O → CH3CH2OH
(To dehydrate and go the other way you use
aluminium oxide, Al2O3)
 450 0C
 2 atm
 Vanadium(v) oxide catalyst
 2SO2 + O2 ⇄ 2SO3
(From this sulphuric acid can be made via
oleum)
Learnt/Revised?