Chapter 9.3

Question 1

What is the saturation point

Answer 1

• in the process of a creating a solution
• > the equilibrium is reached at the saturation point
• > the solute is at a maximum value for a given temperature and pressure

Question 2

What is the change in free energy for an equlibrium

Answer 2

-it is zero

Question 3

How does change in pressure affect the solubility constant

Answer 3

• higher pressures favor dissolution of gas solutes

- >therefore, the Ksp will be larger for gases at higher pressure values

Question 4

What is the ion product used for

Answer 4

• it is analogous to the reaction quotient

- >it tells us where the reaction is in terms of solubility

Question 5

How does the formation of complex ions affect solubility of a salt in a solution

Answer 5

-it increases the salt’s solubility

• note that the complex ion has its own formation or stability constant(Kf)
• Ksp is used for the original dissolution of the solution

Question 6

Describe the common ion effect

Answer 6

-the solubility of a salt is considerably reduced when it is dissolved in a solution that already contains one of its constituent ions as compared to its solubility in a pure solvent

• note that the Ksp in this case remains constant
• > even if you add more, there will be less solid dissolved
• > but again the Ksp does not change