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The Contact process

conditions:

1-vanadium(V) oxide

2-450 C

3-1 atm

reactions:

2SO2(g) + O2(g) => 2SO3(g) (reversible)

2SO3 + H2SO4 => H2S2O7

H2S2O7 + H2O => 2H2SO4

-when SO3 is mixed directly with water it is very exothermic and produces acid mist/fog

-a higher temp will decrease yield because it is exothermic

-a higher pressure will increase yield

calculating Kc =

initial moles ni

change in moles delta ^ n

moles at eq n

conc at eq [] ->

calculating Kp

n / total n x total pressure