Equilibrium

back to IB chemistry = Topic notes =

= Investigations = = Resources =

Animations
[|nitrogen oxides equilibrium and temperature] [|cobalt chloride equilibrium] simulations: Excellent use of graphs to illustrate main ideas: [|equilibrium concepts]
 * basic concepts of equilibrium: [|concentration v time]
 * [|rates becoming equal]
 * [|chemical equilibrium from both directions]
 * [|a tutorial]
 * [|equilibrium and activation energy]
 * [|dynamic equilibrium nitrogen dioxide]
 * [|Le Chatelier]
 * [|video tutorial on Gibbs free energy and Kc]
 * [|tutorial on Gibbs and equilibrium constant]

Old IB specification [|vapour pressure introduction] [|another introduction] [|tutorial] [|how temperature and intermolecular forces affect vapour pressure] [|more on vapour pressure] [|video tutorial on Gibbs free energy and Kc] [|tutorial on Gibbs and equilibrium constant]

Worksheets
= Revision =

Remember:

 * ===== When explaining effect of pressure on position of equilibrium make sure you refer to the number of __//**gaseous**//__ molecules on either side. =====
 * ===== A catalyst //__**lowers the activation energy equally**__// of both the forward and reverse reaction. =====
 * ===== Equilibrium constant only changes when temperature changes. =====
 * Equilibrium expression should use concentrations at equilibrium.