chemical equilibria

Question 1

define dynamic equilibrium [1]

Answer 1

1. reversible eqn in a closed system
2. rates of forward & backward reactions are equal and non-zero
3. no net change in concentrations of reactants & products

Question 2

write expression for equilibrium constant, Kc [1]

Answer 2

*state units
*powers: coefficient in chemical eqn

Kc= [ionic formula of product] [ionic formula]