Equilibrium constants

Define homogeneous equilibrium?

• contains species that all have the same state or phase

What does Kc describe?

• the equilibrium constant for a reversible reaction in terms of concentrations

State the conditions for a dynamic equilibrium?

• A closed system at constant temperature

What does kc>1 mean?

• equilibrium lies to the right, the products are favoured

What does kc<1 mean?

• equilibrium lies to the left, reactants are favoured

What does kc=1 mean?

• there is the same quantities of both reactants and products

Define heterogeneous equilibrium?

• contains species which have different states of phases

For gasses is it easier to measure pressure or concentration?

• pressure

What is needed in order to determine Kp?

• the mole fractions and partial pressures of the gases in the equilibrium mixture

Define mole fraction?

• a gases proportion by volume to the total volume of a mixture