Answer to Question #201615 in General Chemistry for Mickayla

Question

For the equilibrium reaction

2SO₂(g) + O₂(g) ↔2SO₃(g) (H° = -198 kJ) 

which one of the following factors would cause the equilibrium constant to increase?

1. Add SO₂ gas.
2. Decrease the temperature.
3. Add a catalyst.
4. None of the above.

Answer 1

1. Add SO2 gas, since adding a substance before the reaction increases the concentration of this substance and, consequently, increases the reaction rate