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CGP EDU Academic Team
Published on: August 13, 2026
Consider the reaction equilibrium
2SO2 (g) + O2 (g) 
2SO3 (g) ;DH 0 = – 198 kJ.
On the basis of Le Chatelier’s principle, the condition favourable for the forward reaction is
Text Solution
Verified by ExpertsThe correct answer is:
C
The conversion of SO2 to SO3 is an exothermic reaction, hence there is no need to increase the temperature. There is also a decrease in volume or moles in product side. Thus the reaction is favoured by low temperature and high pressure. (Le-Chatelier’s principle)
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