Chemical Equilibrium Concepts and Principles

The video tutorial explains how chemical equilibrium is affected by changes in temperature, pressure, and concentration, using Le Chatelier's principle. It covers the effects of these changes on exothermic and endothermic reactions, and discusses the role of entropy at high temperatures. The tutorial also addresses how adding inert gases does not affect equilibrium.

What principle explains the shift in chemical equilibrium when a system is stressed?

• Le Chatelier's Principle

• Boyle's Law

• Avogadro's Law

• Dalton's Law

In an exothermic reaction, what happens to the equilibrium when the temperature is increased?

• Equilibrium shifts randomly

• Equilibrium shifts to the left

• Equilibrium remains unchanged

• Equilibrium shifts to the right

For an endothermic reaction, increasing the temperature will cause the equilibrium to:

• Remain unchanged

• Shift to the right

• Shift to the left

• Shift randomly

What happens to the equilibrium position when pressure is increased by decreasing volume?

• Remains unchanged

• Shifts randomly

• Shifts towards the side with fewer moles

• Shifts towards the side with more moles

If the concentration of reactants is increased, the equilibrium will:

• Shift randomly

• Shift to the right

• Remain unchanged

• Shift to the left

Increasing the concentration of products will cause the equilibrium to:

• Remain unchanged

• Shift to the right

• Shift randomly

• Shift to the left

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

• Increases reaction rate

• No effect on equilibrium

• Shifts equilibrium to the left

• Shifts equilibrium to the right

Which of the following is NOT a factor that affects chemical equilibrium?

• Temperature

• Concentration

• Pressure

• Color of reactants

What happens to the equilibrium constant when an inert gas is added to the system?

• It increases

• It decreases

• It remains the same

• It becomes zero

Which of the following statements is true regarding Le Chatelier's Principle?

• It predicts the direction of equilibrium shift

• It only applies to gaseous reactions

• It is only applicable at high temperatures

• It changes the equilibrium constant