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Front

What is Le Chatelier's Principle?

Back

Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.

Front

What happens to a system when the concentration of a substance is increased?

Back

The system shifts away from the substance.

Front

What is the system's response when the pressure is decreased?

Back

The system shifts towards more moles of gas.

Front

What is the effect of removing a reactant from a system at equilibrium?

Back

The equilibrium shifts towards the left, favoring the reactants.

Front

What happens when heat is added to an exothermic reaction?

Back

The reaction shifts left, towards the reactants.

Front

What happens when heat is added to an endothermic reaction?

Back

The reaction shifts right, towards the products.

Front

Define reversible reactions.

Back

Reversible reactions are those that can proceed in both forward and reverse directions.

Front

What is an example of a reversible reaction?

Back

The synthesis of ammonia: N2(g) + 3H2(g) ⇌ 2NH3(g).

Front

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

Back

The equilibrium shifts towards the reactants.

Front

What is the effect of increasing temperature on an endothermic reaction?

Back

The equilibrium shifts towards the products.