Consider the following reaction at equilibrium. If the pressure of the system is decreased, which way will the system shift to return to equilibrium?2O3(g) ⇌ 3O2(g)Equilibrium will shift towards the products.Equilibrium will shift towards the reactants.Equilibrium will shift towards the reactants, and then shift towards the products.Equilibrium will shift towards the products, and then shift towards the reactants.
Question
Consider the following reaction at equilibrium. If the pressure of the system is decreased, which way will the system shift to return to equilibrium?2O3(g) ⇌ 3O2(g)Equilibrium will shift towards the products.Equilibrium will shift towards the reactants.Equilibrium will shift towards the reactants, and then shift towards the products.Equilibrium will shift towards the products, and then shift towards the reactants.
Solution
The system will shift towards the side with the greater number of moles of gas when the pressure is decreased. In this case, the reaction 2O3(g) ⇌ 3O2(g) has 2 moles of gas on the reactant side and 3 moles of gas on the product side. Therefore, when the pressure is decreased, the system will shift towards the products to increase the pressure and return to equilibrium. So, the correct answer is "Equilibrium will shift towards the products."
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