Equilibrium Shifts in Chemical Reactions

The video tutorial covers Le Chatelier's Principle, explaining how changes in concentration, pressure, and temperature affect chemical equilibrium. It discusses the industrial application of these concepts, particularly in the Haber process for ammonia production. The tutorial also explains how equilibrium shifts in response to disturbances to restore balance, and how temperature changes affect the equilibrium constant.

Who is credited with the first recorded documentation of maximizing product yield in industrial chemistry?

• Marie Curie

• Albert Einstein

• Fritz Haber

• Henry Louis Le Chatelier

What does Le Chatelier's Principle state about a system at equilibrium?

• It remains unchanged regardless of external conditions.

• It shifts to counteract changes in concentration, pressure, or temperature.

• It always shifts towards the reactants.

• It always shifts towards the products.

What happens to the equilibrium when the concentration of reactants is increased?

• Equilibrium shifts to the left.

• Equilibrium shifts to the right.

• Equilibrium remains unchanged.

• Equilibrium shifts randomly.

If more NH3 is added to the system, what is the expected shift in equilibrium?

• Equilibrium remains unchanged.

• Equilibrium shifts to the left.

• Equilibrium shifts to the right.

• Equilibrium shifts randomly.

How does a decrease in volume affect the pressure and equilibrium in a gaseous system?

• Pressure remains constant, equilibrium does not shift.

• Pressure increases, equilibrium shifts to the side with more moles.

• Pressure increases, equilibrium shifts to the side with fewer moles.

• Pressure decreases, equilibrium shifts to the side with more moles.

What is the effect of increasing the volume on the equilibrium of a gaseous reaction?

• Equilibrium shifts to the side with more moles.

• Equilibrium shifts randomly.

• Equilibrium shifts to the side with fewer moles.

• Equilibrium remains unchanged.

How does an increase in temperature affect an exothermic reaction at equilibrium?

• Equilibrium shifts to the right.

• Equilibrium remains unchanged.

• Equilibrium shifts randomly.

• Equilibrium shifts to the left.

In an endothermic reaction, what role does heat play?

• Heat is neither a product nor a reactant.

• Heat is a reactant.

• Heat is a product.

• Heat is irrelevant.

What happens to the equilibrium constant (K) when temperature changes?

• K changes depending on the reaction.

• K increases.

• K remains the same.

• K decreases.

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

• Equilibrium shifts to the right.

• Equilibrium shifts to the left.

• Equilibrium remains unchanged.

• Equilibrium shifts randomly.