Chemistry · May / June 2017 · Paper 12 · Question 17
5070Reversible reactions and equilibrium
The equation shows the formation of sulfur trioxide in the contact process. 2SO2(g) + O2(g) ⇌ 2SO3(g) ΔH = –196 kJ / mol What would decrease the yield of sulfur trioxide?
- Aaddition of more oxygen
- Ban increase in pressure
- Can increase in temperature
- Dremoval of sulfur trioxide from the reaction chamber
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Correct answer: C. an increase in temperature
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