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Question 1

What is the first step in modeling dynamic equilibria?

Answer 1

Place 50 marbles in container A (reactants) and zero marbles in container B (products).

Question 2

What happens during the forward reaction in the dynamic equilibrium model?

Answer 2

Transfer half the marbles from A to B.

Question 3

What occurs during the reverse reaction in the dynamic equilibrium model?

Answer 3

Transfer one quarter of the marbles from B back to A.

Question 4

How many times should the steps for modeling dynamic equilibria be repeated?

Answer 4

6 times.

Question 5

What indicates that dynamic equilibria has been achieved?

Answer 5

Concentration is equal and the rate of forward and reverse reactions are equal and not zero.

Question 6

List three limitations of the dynamic equilibrium model.

Answer 6

• Does not show constant exchange of matter
• Does not show collisions that occur in reality
• No energy change is shown.

Question 7

True or False: In dynamic equilibria, the rates of the forward and reverse reactions are not equal.

Answer 7

False.

Question 8

Fill in the blank: Dynamic equilibria is achieved when the concentration is _______.

Answer 8

[constant].