Le Chatelier's Principle

[Melissa Villanueva1K]

Could someone briefly explain Le Chatelier's Principle or perhaps point me in the direction of a problem that applies the principle? Thanks!

[Kyleigh Follis 2H]

A change in one of the variables that describe a system at equilibrium produces a shift in the position of the equilibrium that counteracts the effect of this change. Le Chatelier's principle describes what happens to a system when something momentarily takes it away from equilibrium. This can be used when changing the concentration of one of the components of the reaction, changing the pressure on the system, or changing the temperature at which the reaction is run.

[Maria Solis Disc 1G]

In short the reaction shifts to accommodate a change in the reaction. Such as a change in temperature or concentration.

[Sheridan Slaterbeck 1J]

It is basically the concept that chemical reactions by nature adjust so as to minimize the effect of changes. When equilibria is changed, like if more reactant was added more product is produced until original P/R ratio is attained. Or if more product is added, more reactant will form until the the original P/R is attained.

[Lia Inadomi 1I]

Le Chatelier's principle essentially says that a reaction in equilibrium will adjust to minimize the stress of changing factors ie pressure or concentration. For example when more reactants are added to a reaction, the reaction will in turn produce more products to limit the stress.

[ran2000]

Le Chatelier's principle states that a system will respond to change in a means to minimize the effect of the change. That means that the system tries to reverse the effect to return to what it was (essentially). For example, increases the concentration of products causes the Q value to increase. To revert back to equilibrium, the product conc. is decreased by increasing the reactant formation.

[Katelyn Pham 4E]

Le Chatelier's Principle adjusts to minimize the effect of changes. For example, when more reactant is added, more product will form until the original product to reactant ratio is attained.

[Cynthia Aragon 1B]

Le Chatelier's principle corresponds whenever a stress is placed on a situation at equilibrium, the equilibrium will shift to relieve that stress. Stresses include change in concentration, volume, temperature and pressure. For example when the concentration of a reactant or product is increased, the reaction will proceed in the direction that will use up the added substrate.

Ex: N2 (g) + 3H2 (g) forward and reverse 2NH3(g)
If N2 is added, the reaction will proceed in the forward reaction to minimize the street of the reactants.