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This worksheet covers Le Chatelier's Principle, which is part of the Equilibrium module in the Chemistry course. Practice problems are designed to strengthen key concepts and build confidence.
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Set 1 — Foundation
According to Le Chatelier's Principle, what happens to a system at equilibrium if the concentration of a reactant is increased?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction stops.
What is the effect of increasing temperature on an exothermic reaction at equilibrium?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction speeds up.
In the reaction , what will happen if the pressure is increased?
The equilibrium shifts to the left.
The equilibrium shifts to the right.
The equilibrium remains unchanged.
The reaction stops.
What will happen to the equilibrium position of the reaction if an inert gas is added at constant volume?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction stops.
In a reaction where is produced, what happens if the concentration of is decreased?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction speeds up.
What effect does adding a catalyst have on a system at equilibrium?
It shifts the equilibrium to the right.
It shifts the equilibrium to the left.
It speeds up the attainment of equilibrium.
It has no effect on the equilibrium.
For the reaction , what is the effect of increasing the concentration of ?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction stops.
If a reaction at equilibrium is exothermic and the temperature is decreased, what will be the effect on the equilibrium position?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction speeds up.
In the equilibrium system , what is the effect of increasing the pressure?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction stops.
What will be the effect on the equilibrium position if a reactant in the reaction is removed?
The equilibrium shifts to the right.
The equilibrium shifts to the left.
The equilibrium remains unchanged.
The reaction speeds up.
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