(As you read through the material, if you come across a word you don't remember, refer to this list!)
Dynamic Equilibrium:
- A state of balance achieved by two forces in motion; also, a state of apparent repose between two reactions going in opposite directions at equal speed
- An equilibrium in which processes occur continuously, with no net change.
- When two (or more) processes occur at the same rate so that no net change occurs.
Equilibrium Constant:
- A quantity that characterizes the position of equilibrium for a reversible reaction; its magnitude is equal to the mass action expression at equilibrium. (Shown by the letter K). K varies with temperature.
Forward Reactions:
- Forward reaction is a reaction in which products are produced from reactants and it goes from left to right in a reversible reaction.
Reverse Reactions:
- A chemical equation in which the products of a forward reaction have become the reactants, and the reactants of the forward reaction are now the products.
Chemical Equilibrium:
- The products of a reaction can go in reverse creating an equaling out of products and reactants.
Phase Equilibrium:
- Exists between the solid and liquid phase of a substance
- The point at which both the liquid and the solid exist at the same time (e.g. ice in water)
Solution Equilibrium:
- The point at which both the dissolved solute and the re-crystallized form are present (e.g. sugar in water)
STP (Standard Temperature and Pressure):
- Used to describe a substance at standard pressure (1 atm) and a temperature of 25°C (298.15 K).
