What are the favorable conditions for maximum yield of Sulphur trioxide?(a) High pressure, low temperature, excess of oxygen(b) High pressure, low temperature, less oxygen(c) Low pressure, low temperature, excess of oxygen(d) High pressure, high temperature, excess of oxygenI had been asked this question in exam.I would like to ask this question from P-Block Elements topic in division P-Block Elements of Chemistry – Class 12

What are the favorable conditions for maximum yield of Sulphur trioxid

1.	What are the favorable conditions for maximum yield of Sulphur trioxide?(a) High pressure, low temperature, excess of oxygen(b) High pressure, low temperature, less oxygen(c) Low pressure, low temperature, excess of oxygen(d) High pressure, high temperature, excess of oxygenI had been asked this question in exam.I would like to ask this question from P-Block Elements topic in division P-Block Elements of Chemistry – Class 12
Answer» Right option is (a) High pressure, LOW temperature, excess of oxygen Easy explanation: High pressure is preferred since the FORWARD reaction proceeds with decrease in NUMBER of moles. Low temperature is preferred because the reaction is highly exothermic and to have maximum YIELD of Sulphur TRIOXIDE, oxygen is used in excess.

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