Preliminary Information
Home Table of Contents Preliminary Information Introduction Homogeneous Mixtures Solubility Limits Electrolytes Chemical Equations Precipitation Reactions Heat of Solution Colligative Properties Wrap Up

 

Preliminary Information

CH 105 - Lesson 3

Topic: Solutions - Mixed Molecules and/or Ions in Motion

Purpose: To study solutions and their properties.

Objectives:

You have completed this lesson when you can do the following.

1. Define and describe solutions.

2. Distinguish between solutions, pure liquids, colloidal dispersions and suspensions.

3. Use molecular polarity to predict whether or not two substances will mix with one another to form a solution.

4. Use solubility rules to determine whether an ionic compound is soluble in water.

5. Use solubility rules to determine whether an ionic compound will precipitate when selected ions are mixed in solution.

6. Identify and describe unsaturated, saturated, and supersaturated solutions.

7. Explain why saturated solutions containing undissolved solute are examples of dynamic equilibrium.

8. Describe and classify solutions as nonelectrolytes, weak electrolytes, and strong electrolytes.

9. Describe the auto-ionization reaction of water.

10. Classify electrolytes as acids, bases or salts based on their formulas and the ions formed when they dissociate in water.

11. Write equations for solvation reactions, showing the ions present in electrolytic solutions.

12. Describe the physical and bonding changes that take place when ionic, polar, and nonpolar solutes dissolve in water.

13. Calculate the heat of solution for a reaction given the appropriate data.

14. Compare the freezing and boiling points of solutions with those of pure solvents.

15. Given their formulas, predict which solutes will have the most effect on the freezing and boiling points of water.

16. Compare the vapor pressures of solutions with those of pure solvents.

17. Describe osmosis at both the observable and molecular levels.

 

Assignments:

Reading in text:

Find the chapter or sections in your text that deal with the following topics and read them.

Solutions
Solubility rules
Electrolytes
Heat of solution
Colligative properties
Osmosis

HBPA-6: Chapter 14 except section 6
             Chapter 15 sections 5-7 and 12-17
HBPA-7: Chapter 14 except section 6
             Chapter 15 sections 5-7, 11, 13-17

Practice problems in text:

HBPA-6: Chapter 14 exercises 12-15, 32-33, 39-43, 49-50
HBPA-7: Chapter 14 exercises 12-15, 32-33, 35-39, 41-42

To be turned in:

Lab report - Heat of Solution
Problem Set - Turn in your observations and answers to exercises 4, 5, 6, 8, 9, and 15 transferred to the white Problem Set page.

 

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