Unit 3 AOS 2 - Equilibrium Quiz (2A)

• The rate at which reactants are converted into products

• The ratio of the concentration of products to reactants at equilibrium

• The energy difference between reactants and products

• The time it takes for a reaction to reach equilibrium

Tags

NGSS.HS-PS1-6

Tags

NGSS.HS-PS1-6

According to Le Chatelier's Principle, if the concentration of a reactant is increased, the equilibrium of the reaction will:

• Shift to the left, favoring the formation of reactants

• Shift to the right, favoring the formation of products

• Remain unchanged

• Increase the overall reaction rate without shifting the equilibrium

Tags

NGSS.HS-PS1-5

Which of the following factors does NOT affect the position of equilibrium in a chemical reaction?

• Temperature

• Catalyst

• Concentration of reactants or products

• Pressure (for reactions involving gases)

Tags

NGSS.HS-PS1-6

In an exothermic reaction, increasing the temperature will:

• Shift the equilibrium to the right, producing more products

• Shift the equilibrium to the left, producing more reactants

• Have no effect on the equilibrium position

• Increase the value of the equilibrium constant

• The reaction strongly favors the reactants

• The reaction strongly favors the products

• The reaction is at equilibrium

• The reaction rate is very high

For a reversible reaction, the energy diagram shows the energy of the reactants and products. What does the difference in energy between the reactants and products represent?

• Activation energy

• Equilibrium constant

• Reaction rate

If a reaction is endothermic, how does increasing the temperature affect the equilibrium position?

• Shifts it to the left, favoring the formation of reactants

• Shifts it to the right, favoring the formation of products

• Does not affect the equilibrium position

• Decreases the equilibrium constant

Tags

NGSS.HS-PS1-5

Which of the following statements is TRUE regarding the effect of pressure on the equilibrium of a gaseous reaction?

• Increasing pressure always shifts the equilibrium to the side with more gas molecules

• Decreasing pressure always shifts the equilibrium to the side with fewer gas molecules

• Increasing pressure shifts the equilibrium to the side with fewer gas molecules

• Pressure has no effect on the equilibrium of a gaseous reaction

In the context of Le Chatelier's Principle, how does the addition of a catalyst affect a chemical equilibrium?

• It shifts the equilibrium to the right

• It shifts the equilibrium to the left

• It does not shift the equilibrium but increases the rate at which equilibrium is achieved

• It increases the equilibrium constant