10-5 LeChatelier's Principle

Front

What occurs when Na₂SO₄(aq) is added to the system: BaSO₄(s) ⇌ Ba²⁺(aq) + SO₄^2-(aq), increasing the concentration of SO₄^2-(aq)?

Back

The equilibrium shifts to the left, and the concentration of Ba²⁺(aq) decreases.

Front

Given the equation representing a system at equilibrium in a sealed, rigid container: 2HI(g) ⇌ H₂(g) + I₂(g) + energy. Increasing the temperature of the system causes the concentration of HI to...

Back

increase

Front

Given the equation representing a system at equilibrium: PCl₅(g) + energy ⇌ PCl₃(g) + Cl₂(g), which change will cause the equilibrium to shift to the right?

Back

increasing the temperature

Front

Which term identifies a factor that will shift a chemical equilibrium?

Back

temperature

Front

When the concentration of H₂(g) is increased in the reaction H₂(g) + I₂(g) + energy ⇌ 2HI(g) at constant temperature, how does the equilibrium shift?

Back

To the right, and the concentration of HI(g) increases.

Front

Which change causes the equilibrium to shift in the equation: KNO₃(s) + energy ⇌ K⁺(aq) + NO₃^-(aq)? Options: increasing pressure, increasing temperature, adding a noble gas, adding a catalyst.

Back

increasing temperature

Front

If only the concentration of N₂(g) is increased in the equilibrium system N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + energy, what happens to the concentration of NH₃(g)?

Back

NH₃(g) increases

Front

Changes when temperature decreases in equilibrium: N₂(g) + 3H₂(g) ⇌ 2NH₃(g) + energy

Back

The concentration of H₂(g) decreases and the concentration of NH₃(g) increases.

Front

Given the equation representing a reaction at equilibrium: H₂(g) + I₂(g) + heat ⇌ 2HI(g), which change favors the reverse reaction?

Back

decreasing the temperature

Front

Given the reaction at equilibrium: N₂(g) + O₂(g) + energy ⇌ 2NO(g), which change will result in a decrease in the amount of NO(g) formed?

Back

decreasing the concentration of N₂(g)