Chemistry: Quiz: Le Chatelier's Principle

Quiz: Le Chatelier's Principle

1. Le Chatelier's principle states that

a. if a chemical system at equilibrium is stressed, the system will adjust to increase the stress

b. if a chemical system at equilibrium is stressed, the system will adjust to reduce the stress

c. if a chemical system at equilibrium is stressed, the system will not adjust

2. Which of the following is not a way to stress a chemical system?

a. temperature

b. pressure

c. time

3. A reaction that releases heat energy is known as

a. endothermic

b. exothermic

c. isothermic

4. When writing an endothermic reaction, heat energy is stated as a

a. product

b. catalyst

c. reactant

5. An exothermic reaction is allowed to reach equilibrium. If heat energy is then removed, the equilibrium will shift

a. toward the middle

b. to the product side

c. to the reactant side

6. Changes in pressure will only affect substances that are in the __________ state.

a. gaseous

b. liquid

c. solid

7. If a reaction is exothermic, increasing the temperature will cause the K value to

a. increase

b. decrease

c. remain the same