Chemistry Essentials: Equilibrium Disturbances

Mr. Andersen explains equilibrium disturbances in reversible reactions, focusing on how temperature changes affect equilibrium constants. He uses the Haber process as an example to illustrate how disturbances can shift equilibrium and how to calculate equilibrium constants. The video also covers the effects of temperature on endothermic and exothermic reactions, emphasizing the application of Le Chatelier's principle to predict reaction shifts and optimize yields.

What color change occurs when the reaction is pushed to the right in the cobalt solution example?

• Pink to blue

• Blue to pink

• Yellow to green

• Green to yellow

What does the equilibrium constant (K) represent in a chemical reaction?

• The ratio of product concentration to reactant concentration

• The total energy of the system

• The speed of the reaction

• The amount of reactants used

What is the significance of the reaction quotient (Q) in chemical reactions?

• It indicates the amount of reactants

• It measures the energy of the reaction

• It compares current concentrations to equilibrium concentrations

• It determines the speed of the reaction

In the Haber process, what happens to the reaction when Q is less than K?

• The reaction shifts to the left

• The reaction stops

• The reaction reverses

• The reaction shifts to the right

How does increasing temperature affect an endothermic reaction?

• Reverses the reaction

• Decreases K value

• Increases K value

• No effect on K value

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

• No change in equilibrium

• Increases K value

• Shifts equilibrium to the left

• Shifts equilibrium to the right

What is the role of temperature in shifting equilibrium in a reversible reaction?

• It has no role

• It only affects endothermic reactions

• It can shift equilibrium by changing K

• It only affects exothermic reactions

What happens to the K value in an exothermic reaction when temperature is increased?

• K value increases

• K value becomes zero

• K value decreases

• K value remains constant

In the context of the Haber process, what is a strategy to increase ammonia yield?

• Increase temperature

• Remove products

• Decrease temperature

• Add more reactants

How does Le Chatelier's principle apply to changes in temperature?

• It predicts the reaction will reverse

• It predicts the direction of equilibrium shift

• It predicts the reaction will speed up

• It predicts the reaction will stop