Le Chateliers Principle

Front

What does Le Chatelier's Principle state?

Back

If a chemical system at equilibrium is stressed, the system will adjust to reduce the stress.

Front

How can the reaction A + B ⇄ C + D be rewritten to show energy as a reactant?

Back

A + B + energy ⇄ C + D.

Front

What happens to the equilibrium when pressure is increased in the reaction N2 + 3H2 ⇄ 2NH3?

Back

Equilibrium is shifted to the right.

Front

In an endothermic reaction, where is heat energy stated?

Back

As a reactant.

Front

What happens to the equilibrium if the concentration of SO2(g) is increased in the reaction SO2(g) + O2(g) ⇄ SO3(g)?

Back

The equilibrium will shift to the right.

Front

What is the effect of increasing temperature on an exothermic reaction at equilibrium?

Back

The equilibrium will shift to the left.

Front

What is an example of a stress that can affect a chemical equilibrium?

Back

Changes in concentration, pressure, or temperature.

Front

What is the result of decreasing the concentration of a product in a reaction at equilibrium?

Back

The equilibrium will shift to the right to produce more product.

Front

What does it mean for a reaction to be at equilibrium?

Back

The rates of the forward and reverse reactions are equal.

Front

How does adding a catalyst affect a system at equilibrium?

Back

It does not affect the position of equilibrium; it only speeds up the rate of reaching equilibrium.