For N₂(g) + 3H₂(g) ⇌ 2NH₃(g), extra N₂ is added at constant temperature and volume. Which shift is predicted?

For H₂(g) + I₂(g) ⇌ 2HI(g), some HI is removed while temperature and volume stay constant. What happens to the equilibrium position?

In Fe³⁺(aq) + SCN^-(aq) ⇌ FeSCN²⁺(aq), extra SCN^- is added. Which change is expected after equilibrium is reestablished?

For 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), SO₃ is added to a sealed container. Which direction does the system shift?

For PCl₅(g) ⇌ PCl₃(g) + Cl₂(g), Cl₂ is removed. Which response relieves the stress?

For CO(g) + 2H₂(g) ⇌ CH₃OH(g), H₂ is removed at constant temperature and volume. What is predicted?

For CaCO₃(s) ⇌ CaO(s) + CO₂(g), CO₂ gas is added to the closed container. Which shift occurs?

For Ag⁺(aq) + 2NH₃(aq) ⇌ Ag(NH₃)₂⁺(aq), extra NH₃ is added. What happens?

For 2NO₂(g) ⇌ N₂O₄(g), the container volume is decreased at constant temperature. Which shift is predicted?

For N₂O₄(g) ⇌ 2NO₂(g), the pressure is decreased by expanding the container. Which direction is favored?

Consider H₂(g) + Cl₂(g) ⇌ 2HCl(g). If the volume is decreased at constant temperature, what shift is expected?

For 4NH₃(g) + 5O₂(g) ⇌ 4NO(g) + 6H₂O(g), pressure is increased at constant temperature. Which side is favored?

For C(s) + CO₂(g) ⇌ 2CO(g), the container is compressed at constant temperature. What shift should occur?

For PCl₃(g) + Cl₂(g) ⇌ PCl₅(g), the volume is increased. Which prediction is best?

For N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + heat, the temperature is increased. Which shift is predicted?

For heat + N₂O₄(g) ⇌ 2NO₂(g), the mixture is cooled. Which direction is favored?

For 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) + heat, what happens when the temperature is lowered?

For heat + CaCO₃(s) ⇌ CaO(s) + CO₂(g), the temperature is raised. Which shift is predicted?

For H₂(g) + I₂(g) ⇌ 2HI(g) + heat, the temperature is increased. Which amount should decrease after the shift?

For CO(g) + H₂O(g) ⇌ CO₂(g) + H₂(g) + heat, which stress shifts equilibrium toward reactants?

A catalyst is added to SO₂ and O₂ before they reach equilibrium in 2SO₂(g) + O₂(g) ⇌ 2SO₃(g). What is the effect?

For a reversible reaction at equilibrium, a catalyst is introduced but temperature, volume, and concentrations are unchanged. Which statement is correct?

For Co(H₂O)₆²⁺(aq) + 4Cl^-(aq) ⇌ CoCl₄^2-(aq) + 6H₂O(l), the left side is pink and the right side is blue. Concentrated HCl adds Cl^-. What color is expected?

For 2NO₂(g) ⇌ N₂O₄(g) + heat, NO₂ is brown and N₂O₄ is colorless. If the sealed mixture is cooled, what visible change is expected?