Multiple choice

For the reaction- 2SO2 (g) SO3 (g) ⇌ 2SO3 + Heat the yield of SO3 will be maximum if-

  1. The temperature is increased and pressure is kept constant

  2. The temperature is decreased and pressure is increased

  3. Both the temperature and the pressure proteins are increased

  4. Both the temperature and the pressure are decreased
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Le Chatelier's principle, for an exothermic reaction where heat is released on the product side, decreasing the temperature shifts the equilibrium forward to produce more heat. Furthermore, increasing pressure favors the side with fewer moles of gas (reactants have 3 moles, products have 2 moles), thus maximizing the yield of SO3.

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