Understanding Le Chatelier's Principle

What does Le Chatelier's Principle primarily explain?

• The rate of chemical reactions

• How systems at equilibrium respond to external stresses

• The energy changes in reactions

• The formation of new compounds

In the analogy of digging and refilling a hole, what represents the stress on the system?

• The size of the hole

• The type of soil

• The rate of digging

• The number of people digging

What happens to the equilibrium when more reactants are added to a system?

• Equilibrium remains unchanged

• Equilibrium shifts to the right

• Equilibrium shifts to the left

• Equilibrium is destroyed

If the concentration of products is decreased, which direction does the equilibrium shift?

• To the left

• Becomes unstable

• Remains unchanged

• To the right

How does an increase in pressure affect a gaseous equilibrium system?

• Shifts equilibrium to the side with fewer moles

• Shifts equilibrium to the side with more moles

• Destroys the equilibrium

• Has no effect on equilibrium

In a reaction with 2 moles of reactant A and 1 mole of product B, what happens when pressure is decreased?

• Equilibrium remains unchanged

• Equilibrium shifts to the left

• Equilibrium is destroyed

• Equilibrium shifts to the right

What is the effect of decreasing pressure on a system with more moles on the left side?

• Shifts equilibrium to the right

• Shifts equilibrium to the left

• No effect on equilibrium

• Destroys the equilibrium

What is the primary focus of the next lesson mentioned in the video?

• Changes in temperature

• Changes in concentration

• Changes in volume

• Changes in pressure

According to Le Chatelier's Principle, what does a system do when stressed?

• It remains unchanged

• It works to restore equilibrium

• It speeds up the reaction

• It stops the reaction

What is the main takeaway from Le Chatelier's Principle?

• Equilibrium systems are unaffected by external changes

• Equilibrium systems are unpredictable

• Equilibrium systems adjust to minimize stress

• Equilibrium systems are static