Chapter 16.1, Problem 8LC

(a)

Interpretation Introduction

Interpretation: To change a saturated solid/liquid solution to an unsaturated solution.

Concept Introduction: A solution is said to be saturated when the maximum amount of solute is added to the solvent but when the amount of solute becomes more, the solute remains in the undissolved form in the solution and hence, the solution becomes unsaturated.

Answer to Problem 8LC

A saturated solid/liquid solution is changed to an unsaturated solution by increasing the temperature and adding solvent.

Explanation of Solution

A saturated solution can be changed into an unsaturated solution by the following factors such as:

1. Increase the temperature: If the temperature is increased, more amount of solute will be dissolved and hence, the solution will become unsaturated.
2. Addition of solvent: If the solvent is added more in the solution, the amount of solute dissolved will increase, and hence, the solution will become unsaturated.

(b)

Interpretation Introduction

Interpretation:

To change the saturated gas/liquid to an unsaturated solution.

Concept Introduction: A saturated solution is a solution in which no more solute can be added because the solute is dissolved in the maximum amount already. An unsaturated solution is one in which more solute can be added.

Answer to Problem 8LC

The saturated gas/liquid can be changed to an unsaturated solution by increasing the pressure, lowering the temperature, and agitation.

Explanation of Solution

The saturated gas/liquid can be changed to an unsaturated solution by following methods:

• Increase the pressure: In the case of gas/liquid, the increase in pressure will increase the solubility, and hence, the solution becomes unsaturated.
• Lower the temperature: The temperature is lowered to make the gas more soluble as, the temperature decreases solubility of the gas increases.
• Agitation: If the solution is stirred, the solution can be made unsaturated.