Equilibrium

Question 1

What does the value of Kc mean?

Answer 1

• Exactly 1 = halfway between reactants and products.
• More than 1 = closer to products.
• Less than 1 = closer to reactants.

Question 2

What is a heterogenous equilibrium?

Answer 2

• Species have different states/phases.
• Concentrations of liquids and solids are effectively constant, so are omitted.
• Kc expression contains concentrations of only gaseous and aqueous species.

Question 3

How is Kc calculated experimentally?

Answer 3

• Add concentrated ethanoic acid and ethanol to a conical flaks. 0.1 mol of each.
• Add a drop of H2SO4 to this and put a bung in