At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?
Correct answer: B. √P
- A. P
- B. √P
- C. P2
- D. 1/P
Explanation
The reaction 2SO₂ + O₂ ⇌ 2SO₃ reduces the total number of gas moles by one, so increasing pressure favours SO₃ formation. Under the usual equilibrium-yield approximation, the yield varies with the square root of pressure.
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