Le Chatelier's Principle and Equilibrium

The video explains Le Chatelier's principle, focusing on how systems at equilibrium respond to stress by shifting to restore balance. It covers changes in concentration, pressure, and temperature, using the formation of ammonia as an example. The video also discusses how to predict the direction of the shift using Q and K values, and provides scenarios of concentration changes.

What is the primary focus of Le Chatelier's Principle?

• Understanding the effect of stress on equilibrium

• Calculating the exact amount of reactants

• Determining the color change in reactions

• Predicting the speed of a reaction

Which of the following is NOT a type of stress discussed in relation to Le Chatelier's Principle?

• Change in color

• Change in temperature

• Change in volume

• Change in concentration

In the ammonia formation example, what happens when hydrogen concentration is increased?

• The reaction shifts to the right

• The reaction stops

• The reaction shifts to the left

• The reaction remains unchanged

What is the effect of increasing a reactant on the equilibrium position?

• The system shifts to the left

• The system shifts to the right

• The system remains at equilibrium

• The system becomes unstable

How does the system respond when a product is added?

• Becomes explosive

• No change

• Shifts to the left

• Shifts to the right

What is a common method to remove a reactant from a gaseous equilibrium system?

• Cooling the container

• Using a syringe

• Introducing a side reaction

• Heating the container

What happens to the equilibrium constant (K) when equilibrium is re-established after a stress?

• It decreases

• It remains the same

• It becomes zero

• It increases

What is the system's response when a reactant is removed?

• Becomes unstable

• No change

• Shifts to the left

• Shifts to the right

What is the effect of removing a product on the equilibrium position?

• The system becomes unstable

• The system shifts to the left

• The system shifts to the right

• The system remains at equilibrium

What is the general rule for equilibrium shift when a reactant is added?

• Shift left

• Shift right

• No shift

• Shift up