Equilibrium Shifts in Chemical Reactions

The video tutorial explains the concept of shifting equilibrium, focusing on Le Chatelier's principle. It covers how changes in pressure, concentration, and temperature affect chemical equilibrium, using the Haber process as an example. The tutorial emphasizes that while equilibrium position can shift, the equilibrium constant remains unchanged unless temperature is altered.

What does Le Chatelier's Principle state about a system at equilibrium when conditions are altered?

• The system will remain unchanged.

• The system will adjust to minimize the change.

• The system will always shift towards the reactants.

• The system will always shift towards the products.

In the Haber process, what happens to the equilibrium when pressure is increased?

• The reaction shifts towards the products.

• The equilibrium constant changes.

• The reaction shifts towards the reactants.

• The reaction stops.

When pressure is decreased in a gaseous reaction, what is the expected shift in equilibrium?

• Towards the side with more moles of gas.

• Towards the side with fewer moles of gas.

• No shift occurs.

• The reaction stops.

How does adding more nitrogen affect the Haber process equilibrium?

• It has no effect.

• It shifts towards the reactants.

• It shifts towards the products.

• It decreases the amount of ammonia.

What happens to the equilibrium position when a reactant is added to a system?

• The equilibrium constant changes.

• It shifts towards the reactants.

• It shifts towards the products.

• It remains unchanged.

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

• The equilibrium constant remains unchanged.

• The reaction rate decreases.

• The reaction shifts towards the reactants.

• The reaction shifts towards the products.

Which factor can change the equilibrium constant (Keq) of a reaction?

• Catalyst

• Temperature

• Pressure

• Concentration

How does removing a product from a reaction at equilibrium affect the system?

• The reaction shifts towards the products.

• The equilibrium constant changes.

• The reaction rate decreases.

• The reaction shifts towards the reactants.

In an endothermic reaction, what is the effect of decreasing temperature?

• The reaction shifts towards the products.

• The equilibrium constant increases.

• The reaction rate increases.

• The reaction shifts towards the reactants.

What role does a catalyst play in a chemical reaction at equilibrium?

• It shifts the equilibrium towards the reactants.

• It shifts the equilibrium towards the products.

• It speeds up the reaction without changing the equilibrium.

• It changes the equilibrium constant.