19Nitrogen Sulfur Industrial ProcessesMedium1 markThe equation for one of the reactions in the Contact process is shown.2SO2(g)+O2(g)⇌2SO3(g)ΔH=−196 kJ / molWhich statement about this reaction is correct?AThe typical conditions are a temperature of 450 ∘C and a pressure of 200 atm.BThe raw materials for this reaction are obtained from air and methane.CIron is normally used as the catalyst to increase the rate of reaction.DIncreasing the temperature increases the rate of reaction, but decreases the yield of SO3.Grade answerGrading criteria