Equilibrium

• forward reaction is exothermic
• reverse reaction is endothermic
• equilibrium position can be altered by changing concentration of reacting substances, pressure of reacting gases and temperature
• Le Chateliers principle is when an external change is made to a system in dynamic equilibrium, the system responds to minimise the effect of the change
• expressions only include substances in gaseous or aqueous states
• reaction quotient measures the relative amount of products and reactants present during a reaction at a particular point in time
• Q<Kc means the reaction will make more product to equilibrate
• Q>Kc means the reaction will make more reactions to equilibrate
• Q=Kc means that the reaction is at equilibrium
• ICE stands for initial, change and equilibrium