| A | B |
| Keq | A constant that is calculated from the molarity of the products and reactants |
| Keq = 1 | System is at equilibrium |
| Keq >1 | Products are favored |
| Keq <1 | Reactants are favored |
| Exothermic Reaction | Heat is a product |
| Endothermic Reaction | Heat is a reactant |
| Equilibrium Expression | [Products]/[Reactants] |
| Law of Mass Action | Same as Equilibrium Expression |
| Solids and Pure Liquids | Don't belong in Equilibrium Expression |
| Aqueous and gas | Belong in Equilibrium Expression |
| Le Chatelier's Principle | Reaction rates will shift to the left or right to counteract a stress to an equilibrium system |
| Le Chatelier's Principle | Pronounced Leur-Chat-Till-Yay |