C2H4(g) + H2O(l) C2H5OH(l)
exothermic reaction
Temperature...eqm goes left
high yield favoured by a low temperature but it is slow so a compromise of 300°c
Pressure...2 moles to 1 mole
eqm goes right
high yield favoured by high pressure but it is expensive so a compromise of 6.5m Pa
Phosphoric acid, H3PO4 is added to increase the rate of both reactions equally so eqm is unaffected but reaction is much quicker
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