Consider the following equilibrium. 2SO₂ (g) + O₂ (g) 2SO₃ (g)
The equilibrium cannot be established when __________ is/are placed in a 1.0-L container.

Question

Consider the following equilibrium. 2SO₂ (g)+ O₂ (g) 2SO₃ (g) The equilibrium cannot be established when __________ is/are placed in a 1.0-L container.

Quizplus · Accepted Answer

According to the balanced chemical equation, the equilibrium involves only the conversion of 2 mol of SO₂ and 1 mol of O₂ to 2 mol of SO₃, which means the ratio of the reactants and products should be 2:1. Option B has only 0.75 mol of SO₂, which is less than half of 1.0 mol and no excess O₂ to balance the ratio. So, the equilibrium cannot be established in this case. The other options have either the correct ratio of reactants and products or excess amount required to establish the equilibrium.

Consider the Following Equilibrium