Equilibrium and Le Chatelier's Principle

The video tutorial covers chemical equilibrium, focusing on dynamic equilibrium and Le Chatelier's Principle. It explains dynamic equilibrium as a state where the forward and reverse reaction rates are equal, using traffic as an analogy. Le Chatelier's Principle is introduced as a system's response to disturbances, with examples of temperature, pressure, and concentration changes. The video concludes with a summary of these concepts.

What is required for a reaction to be in dynamic equilibrium?

• The reaction must stop completely.

• The reaction must be irreversible.

• The forward and reverse reactions must occur at different rates.

• The reaction must be reversible.

Which analogy is used to explain dynamic equilibrium?

• A seesaw at rest

• A traffic flow in a city

• A pendulum swinging

• A river flowing

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

• It accelerates the forward reaction.

• It stops all reactions.

• It shifts to oppose any change in conditions.

• It remains unchanged regardless of external conditions.

What does the 'D' in the DLF R acronym stand for?

• Density

• Dynamic

• Disturbance

• Direction

In the context of Le Chatelier's Principle, what does 'F' stand for in DLF R?

• Fixed

• Fast

• Forward

• Favor

What does the 'R' in the DLF R acronym represent?

• Reversible

• Reaction

• Rate

• Result

How does a system in equilibrium respond to a decrease in temperature?

• By decreasing concentration

• By favoring the endothermic reaction

• By favoring the exothermic reaction

• By increasing pressure

What happens to the equilibrium when pressure is increased?

• The reaction favors the side with fewer moles of gas.

• The reaction rate decreases.

• The reaction favors the side with more moles of gas.

• The reaction stops completely.

What is the effect of removing a reactant from a system in equilibrium?

• The system will stop reacting.

• The system will increase temperature.

• The system will produce less of the removed reactant.

• The system will produce more of the removed reactant.

What is the role of Delta H in determining the effect of temperature changes on equilibrium?

• It measures the concentration of reactants.

• It determines the pressure of the system.

• It shows whether the reaction is exothermic or endothermic.

• It indicates the speed of the reaction.