Podcast
Questions and Answers
What is the general role of a catalyst in a reaction?
What is the general role of a catalyst in a reaction?
- Changes the equilibrium position
- Initiates the reaction
- Speeds up a reaction already in progress (correct)
- Halts the reaction completely
How does a catalyst affect the final position of equilibrium in a reversible reaction?
How does a catalyst affect the final position of equilibrium in a reversible reaction?
- Hinders the establishment of equilibrium
- Shifts the equilibrium position to the left
- Shortens the time to establish equilibrium but does not affect the equilibrium position (correct)
- Shifts the equilibrium position to the right
Why do some reactions require a catalyst to start?
Why do some reactions require a catalyst to start?
- Because reactants lack minimum kinetic energies for successful collisions (correct)
- To speed up an already fast reaction
- To provide energy for the reaction
- To change the equilibrium position
Which of the following statements about catalysts is FALSE?
Which of the following statements about catalysts is FALSE?
In the absence of a catalyst, what happens to reacting molecules during collisions?
In the absence of a catalyst, what happens to reacting molecules during collisions?
What is the effect of a catalyst on reversible reactions?
What is the effect of a catalyst on reversible reactions?
What is the primary role of a catalyst in a chemical reaction?
What is the primary role of a catalyst in a chemical reaction?
In the Haber process for ammonia synthesis, how does the iron catalyst affect the reaction?
In the Haber process for ammonia synthesis, how does the iron catalyst affect the reaction?
If a catalyst accelerates the forward reaction more than the reverse reaction, what would be the consequence?
If a catalyst accelerates the forward reaction more than the reverse reaction, what would be the consequence?
For a reversible reaction at equilibrium, what can be said about the rates of the forward and reverse reactions?
For a reversible reaction at equilibrium, what can be said about the rates of the forward and reverse reactions?
Why does the rate of a reaction decrease as it approaches equilibrium?
Why does the rate of a reaction decrease as it approaches equilibrium?
According to the energy considerations discussed, what statement is true about catalysts?
According to the energy considerations discussed, what statement is true about catalysts?
What is the effect of a rise in temperature on the catalytic activity of a catalyst?
What is the effect of a rise in temperature on the catalytic activity of a catalyst?
What is the purpose of adding a promoter to a catalyst?
What is the purpose of adding a promoter to a catalyst?
How does the addition of a promoter affect the rate of a catalytic reaction?
How does the addition of a promoter affect the rate of a catalytic reaction?
What is the relationship between temperature and the rate of a catalytic reaction according to the text?
What is the relationship between temperature and the rate of a catalytic reaction according to the text?
How does the addition of a catalyst affect the equilibrium of a reversible reaction?
How does the addition of a catalyst affect the equilibrium of a reversible reaction?
What is the purpose of using a mixture of catalysts in a chemical reaction?
What is the purpose of using a mixture of catalysts in a chemical reaction?
