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Discussion :: Chemical Engineering Thermodynamics

  1. In the reaction, represented by, 2SO₂ + O₂ ⇋ 2SO₃; ΔH = - 42 kcal; the forward reaction will be favoured by

    2. A.

     Low temperature
    B.

     High pressure
    C.

     Both A and B
    D.

     Neither A nor B

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    Answer : Option C

    Explanation :

    Le Chatelier's principle says that for an exothermic reaction decrease in temperature favours the forward reaction and for a reaction if Δn<0   the increase in pressure favours the forward reaction and for a reaction if Δn>0   the increase in pressure favours the backward reaction. Since the given reaction is having Δn<0   increase in pressure favours the forward reaction.

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