7.6 Equilibrium Constants And Gibbs Free Energy

Question 1

What does the position of equilibrium respond to?

Answer 1

The reaction mixture with the maximum value of entropy of the universe and the minimum value of Gibbs free energy of the system.

Question 2

What direction does a reaction proceed in?

Answer 2

The direction that involves a decrease in Gibbs free energy where delta G is negative.

Question 3

Why will a mixture of reactant react to produce the equilibrium mixture?

Answer 3

Because it has low Gibbs free energy.

Question 4

Why will a movement away from the equilibrium mixture be unfavourable?

Answer 4

Because it will involved an increase in Gibbs free energy where delta G is positive.

Question 5

What is the equation that related delta G and the equilibrium constant?

Answer 5

delta G = -RTlnK

Question 6

How is a negative value of delta G related to K and the position of equilibrium?

Answer 6

K is greater than 1 and the position of equilibrium is towards the right.

Question 7

How is a positive value of delta G related to K and the position of equilibrium?

Answer 7

K is smaller than 1 and the position of equilibrium is towards the left.