Factors effecting Equilibrium(Review)

Multiple Choice

Which of the following factors can affect the position of chemical equilibrium in a reaction?

• Concentration, temperature, and pressure

• Volume and color

• Mass and density

• Shape and size

Open Ended

Why is it important to understand the factors that affect chemical equilibrium in chemical reactions?

Open Ended

How can the number of people inside a busy shopping mall stay constant even though people are still moving in and out?

Multiple Choice

According to Le Chatelier’s Principle, what happens to the equilibrium position when more reactants are added to the system H₂(g) + I₂(g) ⇌ 2HI(g)?

• Equilibrium shifts to the right (more products)

• Equilibrium shifts to the left (more reactants)

• Equilibrium does not change

• Equilibrium shifts to the left (more products)

Multiple Select

Which of the following statements about the effect of temperature on equilibrium is correct?

• Increasing temperature shifts equilibrium toward the endothermic direction

• Decreasing temperature shifts equilibrium toward the exothermic direction

• Increasing temperature shifts equilibrium toward the exothermic direction

• Decreasing temperature shifts equilibrium toward the endothermic direction

Open Ended

What is the effect of temperature on the equilibrium direction?

Open Ended

Explain how adding heat affects the equilibrium position in an endothermic reaction.

Multiple Choice

For the endothermic reaction $$N_2O_4(g) \rightleftharpoons 2NO_2(g)$$ , what is the effect of increasing temperature on the equilibrium position?

• The equilibrium shifts to the left.

• The equilibrium shifts to the right.

• The equilibrium remains unchanged.

• The reaction rate decreases.

Multiple Choice

How does increasing pressure affect the equilibrium position in a gaseous reaction, and what role does the number of moles of gas play in this shift?

• It shifts equilibrium toward the side with fewer moles of gas to reduce pressure.

• It shifts equilibrium toward the side with more moles of gas to increase pressure.

• It has no effect on the equilibrium position.

• It shifts equilibrium toward the side with equal moles of gas.

Multiple Choice

In the Haber process for ammonia synthesis, what is the effect of increasing pressure on the equilibrium position?

• The equilibrium shifts towards the reactants.

• The equilibrium shifts towards the products.

• The equilibrium remains unchanged.

• The reaction stops.

Multiple Choice

In a closed system, if the volume is decreased, what happens to the equilibrium position of a gaseous reaction?

• The equilibrium shifts towards the side with more moles of gas.

• The equilibrium shifts towards the side with fewer moles of gas.

• The equilibrium remains unchanged.

• The reaction stops.

Multiple Choice

Le Chatelier’s Principle helps predict the direction of equilibrium shift when a change occurs. Which of the following is NOT a factor that affects chemical equilibrium?

• Concentration

• Temperature

• Pressure

• Color

Open Ended

Reflecting on today's lesson about factors affecting chemical equilibrium, what is one question you still have or something you would like to know more about?