Equilibrium

Which of the following represents a state of dynamic equilibrium in a closed chemical system?

For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), if the equilibrium constant Kc is very large, what can be inferred?

In the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), what will happen to the equilibrium if the volume of the container is decreased?

Which expression correctly represents the equilibrium constant Kc for the reaction: H₂(g) + I₂(g) ⇌ 2HI(g)?

If the equilibrium constant Kc for the reaction A + B ⇌ C is 10, what is the value of Kc for the reverse reaction C ⇌ A + B?

In the reaction CO(g) + 2H₂(g) ⇌ CH₃OH(g), which change will increase the yield of methanol?

For the reaction 2NO₂(g) ⇌ N₂O₄(g), ΔH is negative. What effect will increasing temperature have on the equilibrium position?

Calculate the equilibrium constant Kc at 300 K for the reaction: 2A ⇌ B + C, given that at equilibrium [A] = 0.2 M, [B] = 0.3 M, and [C] = 0.3 M.

Which of the following statements about Le Chatelier’s principle is FALSE?

For the reaction: PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), Kc = 0.5 at a certain temperature. If initially 1 mole of PCl₅ is placed in a 1 L container, what is the equilibrium concentration of PCl₅?