Chapter 17 Quiz - Chemistry

15 Questions | By Muitran | Last updated: Mar 21, 2022 | Total Attempts: 124

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Questions and Answers

1.

Every collision results in a completed reaction.
- A.
  
  True
- B.
  
  False
2.

The likelihood of a completed reaction depends first on how energetic the initial collision is.
- A.
  
  True
- B.
  
  False
3.

An increase in temperature always reduces reaction rate.
- A.
  
  True
- B.
  
  False
4.

An increase in pressure (only relevant with gases) can increase the reaction rate.
- A.
  
  True
- B.
  
  False
5.

A catalyst increases the reaction rate by ___________.
- A.
  
  Decreasing the amount of space between particles
- B.
  
  Reducing the activation energy of a reaction
- C.
  
  Increasing the kinetic energy of the particles
- D.
  
  Increasing the collision rate
6.

The symbol, Ea, stands for ______.
7.

The activation energy of a reaction is _______________.
- A.
  
  The energy necessary to break old bonds
- B.
  
  The amount of energy required to form new bonds
- C.
  
  The potential energy of the reactants
- D.
  
  The potential energy of the products
8.

Static equilibrium within a system means that the forward reaction is progressing at the same rate as the reverse reaction.
- A.
  
  True
- B.
  
  False
9.

Dynamic equilibrium of a system occurs when the products equal the reactants.
- A.
  
  True
- B.
  
  False
10.

Chemical equilibrium for a reaction is different when placed under new conditions.
- A.
  
  True
- B.
  
  False
11.

In a reaction rate energy diagram, the reaction is considered ___________ when the potential energy of the products is lower than that of the reactants.
- A.
  
  Endothermic
- B.
  
  Exothermic
- C.
  
  Kinetic
- D.
  
  Equilibrium
12.

Catalysts are useful for increasing reaction rates because they are not consumed in the reaction and may, therefore, be reused.
- A.
  
  True
- B.
  
  False
13.

Which of the following will decrease the reaction rate of a chemical reaction in a gaseous system?
- A.
  
  Introducing a catalyst
- B.
  
  Lowering the temperature
- C.
  
  Increasing the pressure
- D.
  
  Increasing the kinetic energy of the particles in the system
14.

Enzymes lose functionality when the temperature of the system is too high.
- A.
  
  True
- B.
  
  False