Chemical equilibrium and Le Chatelier's principle

Question 1 of 10

The French chemist whose principle predicts shifts in equilibrium was Henri Le ___.

Question 2 of 10

For H₂ + I₂ ⇌ 2HI, the equilibrium concentrations are [H₂] = 0.5, [I₂] = 0.5 and [HI] = 0.4 mol/dm³. Find Kc.

Question 3 of 10

Describe a simple experiment that demonstrates the effect of temperature on an equilibrium, such as N₂O₄ ⇌ 2NO₂ or the cobalt chloride equilibrium. Explain your observations.

Question 4 of 10

For A ⇌ B, at equilibrium [A] = 0.2 mol/dm³ and [B] = 0.5 mol/dm³. Find Kc.

Question 5 of 10

The expression for Kc for 2SO₂ + O₂ ⇌ 2SO₃ is

Question 6 of 10

For an exothermic forward reaction, lowering the temperature increases Kc.

Question 7 of 10

For A ⇌ B, at equilibrium [A] = 0.5 mol/dm³ and [B] = 0.5 mol/dm³. Find Kc.

Question 8 of 10

Explain why, in industry, a catalyst is used in reversible reactions even though it does not change the position of equilibrium.

Question 9 of 10

Kc depends on pressure.

Question 10 of 10

In the Contact process, the catalyst used is vanadium(V) ___.