If a stress is applied to a system at equilibrium then the system shifts to relieve the stress.

Precipitation Reactions occur when cations and anions of aqueous solutions combine to form an insoluble ionic solid, called a precipitate.

A reaction that goes the opposite way than the original reaction.

The ratio of product concentration reactant concentrations.

A stress is something that causes tension on a system.

The lowering of the solubility of a substance by the presence of another common ion.

The Reaction Rate for a given chemical reaction is the measure of the change in concentration of the reactants or the change in concentration of the products per unit time.

Endothermic- gains energy (photosynthesis)
Exothermic-loses energy(burning)

1. changing the concentration of one of the components of the reaction

2. changing the pressure on the system

3.changing the temperature at which the reaction is run.

If the volume of the gas is reduced, the concentrations of all reactants and products are simultaneously increased, which corresponds with an increase in the total concentration of species in the gas. Using Le Châtelier's Principle, the system should reac

Dynamic means never stopping, such as the chemical and reverse reactions.

1.Activation energy
2. energy of reactants
3.energy of products
4.energy lost or gained

Keq=[C]c[D]d
-------------
[A]a[B]b

Add Heat Remove Heat
Endothermic increase decrease
Exothermic decrease increase

Chemical equilibrium is when the forward and reverse reactions balance each other out.

Something that stops or ends.

1. must collide
2.must collide with the right trajectory
3. must collide with sufficient force

Equilibrium constants aren't changed if you change the concentrations of things present in the equilibrium. The only thing that changes an equilibrium constant is a change of temperature.

1. equal at equilibrium - saturated solution
2. Keq has more reactants- unsaturated
3. Qeq has more products- supersaturated

Solid