Equilibrium Responses in Chemical Reactions

The video explains Le Chatelier's Principle, which states that a system at equilibrium will adjust to counteract changes imposed on it. Through examples, it demonstrates how changes in concentration, pressure, and volume affect chemical reactions. The video also includes practice problems to reinforce understanding.

What is the primary response of a system at equilibrium when a change is imposed?

• It shifts to relieve the change.

• It remains unchanged.

• It accelerates the reaction.

• It decreases the temperature.

If the concentration of a reactant is increased, in which direction will the equilibrium shift?

• It will not shift

• Towards the products

• Towards the reactants

• It will oscillate

When the concentration of a product is decreased, what is the system's response?

• Increase temperature

• Shift towards the products

• Shift towards the reactants

• No change

How does the system respond when the concentration of a gaseous product is increased?

• Shifts towards the reactants

• Shifts towards the products

• No change

• Decreases temperature

What happens to the equilibrium position when a catalyst is added to a reaction?

• It shifts to the right

• It stops the reaction

• It shifts to the left

• It remains unchanged

What happens to the equilibrium constant when a solid reactant is added?

• It increases

• It decreases

• It becomes zero

• It remains the same

What is the effect of increasing the concentration of a liquid reactant on equilibrium?

• No effect

• Shifts to the left

• Increases pressure

• Shifts to the right

How does decreasing the volume of a reaction vessel affect the equilibrium?

• Shifts towards fewer moles of gas

• Shifts towards more moles of gas

• Increases temperature

• No effect

If the partial pressure of a gas is increased, in which direction will the equilibrium shift?

• Towards the side with more gas molecules

• No shift

• Towards the side with fewer gas molecules

• Towards the side with solids

What is the effect of adding an inert gas to a reaction at equilibrium?

• Shifts to the right

• Shifts to the left

• Increases reaction rate

• No effect on equilibrium