Le Chatelier's Principle

[AMahadi]

When do you use Chatelier's Principle?

[san_2F]

You use the Chatlier's Principle any time a reaction at equilibrium is disturbed. This includes when concentrations of either reactants are products are increased or decrease, when pressure is increased or decreased, and when temperature is increased or decreased.

[Amanda Mei 1B]

Le Chatelier's Principle can predict the effect of a change in conditions on chemical equilibria. If there is a change in conditions, the equilibrium will shift to counteract the effect of the constraint.

[Sara Richmond 2K]

Le Chatelier's Principle can be used to determine how changes in specific constraints of a reaction in equilibrium will affect the other constraints of the reaction. The principle can be best understood if you look at it like a fraction. (A/B=C) In situation, C never changes. So if A is increased, then B must also increase in order that C does not change.

Example:
6/3=2
But if we raise 6 to 8, then we must raise 3 to 4 in order that 2 may stay 2.

[Emily Burghart 1k]

Is it appropriate to consider Le Chatelier's Principle as a ratio?
I.e. determining the change of one value would aid in determining the other values and thus, the equilibrium?

[Ayushi2011]

The principle states that every time there is a shift from equilibrium, the effect of the shift will be counteracted to maintain equilibrium.

[Matt F]

Is it appropriate to consider Le Chatelier's Principle as a ratio?
I.e. determining the change of one value would aid in determining the other values and thus, the equilibrium?

I believe so. Since the equilibrium constant K does not change regardless of changes in concentration or pressure, the change in one reactant or product would produce an equalizing response across the reaction, depending on the coefficients.

[PranaviKolla2B]

What exactly is Le Chatelier's principle?

[John Liang 2I]

Le chatlier’a principle is that a chemical rxn at equilibrium will do its best to minize effects to the system. Meaning, if product is added to a rxn at equilibrium, the reverse rxn would increase to “balance” out the inequality. It’s used to predict how a rxn at equilibrium would change if we disturbed equilibrium.

[Maika Ngoie 1B]

Le Chateliers principle is used any time a reaction at equalibrium is changed in any way

[jisulee1C]

For example if product is added the reaction will shift to reactants to undo the stress and vice versa. In addition, lowering or raising the temperature would depend on the reaction and whether it is endothermic or exothermic. For an exothermic reaction raising temperature would shift the reaction toward reactants to find the lowest energy state that is thermodynamically favored.

[Justin Quan 4I]

To add on, Le Chatelier's Principle is a set of principles or guidelines that predicts the effect of a change to a system under equilibrium conditions. You use Le Chatelier's Principle when a reaction at equilibrium is disturbed. Factors that would change equilibrium include changes in temperature, concentration, and partial pressure for gas reactions.

[Minh Ngo 4G]

When something is disturbing your chemical equilibrium and you want to see what happen next

[Katie Bart 1I]

It's all about the reaction rebalancing after a physical change occurs.

[205291012]

The principle simply states that when stress is applied to a system in dynamic equilibrium, the the equilibrium adjusts to minimize the effects of stress. So if a system is compressed, then the equilibrium will favor whichever side has fewer moles. Other examples include adding or removing a reactant/product, changing the temperature, changing partial pressure.

[Jainam Shah 4I]

Le Chatelier's principle is basically a principle that explains how a system after a sudden change or perturbation works to restore equilibrium and it highlights how things such as pressure, volume, and concentration do not affect the K constant itself, but simply it will affect how the reaction initially changes and works back to reach equilibrium.

[Ruth Glauber 1C]

It applies anytime a reaction at equilibrium is disturbed.

[vanessas0123]

You use the Principle any time a change is made to the reaction at equilibrium. The reaction will shift to minimize the effect of the change due to Le Chatelier's Principle.

[Michelle Xie 2B]

You use the principle when the reaction is no longer at equilibrium.

[Emil Velasco 1H]

Le Chatelier's Principle applies whenever a system is "disturbed" in the sense that reactants or products are added/removed.