Consider the reaction equilibrium
2SO₂ (g) + O₂(g) $⇌$ 2SO₃ (g); $∆ H^{°}$ = - 198 kJ.
On the basis of Le Chatelier's principle, the condition favourable for the forward reaction is :

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lowering of temperature as well as pressure

lowering the temperature and increasing the pressure

any value of temperature and pressure

increasing temperature as well as pressure

answer is C.

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Detailed Solution

Formation of SO₃ is exothermic process , so low temperature and high pressure is the favorable for the formation of SO₃

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