Equilibrium Law & Equilibrium Constant

Equilibrium Constant Expression

it is the mathematical description of a chemical system at equilibrium using a balanced chemical equation at constant temperature

if we represented an equation as:

aA + + bB ←→cC dD

The equilibrium constant expression would be:

Kc ONLY changes with TEMPERATURE. If all other variables remain constant, Kc will remain unchanged for that reaction (equilibrium law)!

Writing equilibrium laws & calculating k

Write the equilibrium equation for the reaction described below

1. Identify reactants, products and their coefficients.

2. Apply the equilibrium law equation