Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Solubility Rules

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Multiple Choice

Which of the following statements best explains why ionic solids dissolve in water?

Ionic solids dissolve in water only if the temperature is above 100°C.

Water molecules are nonpolar and repel the ions, causing them to disperse.

Ionic solids dissolve in water because water forms covalent bonds with the ions.

Water molecules are polar and can surround and stabilize the separated ions from the solid.

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Verified step by step guidance

Understand the nature of ionic solids: Ionic solids are composed of positive and negative ions held together by strong electrostatic forces called ionic bonds.

Recognize the polarity of water molecules: Water is a polar molecule, meaning it has a partial positive charge on the hydrogen atoms and a partial negative charge on the oxygen atom.

Explain the interaction between water and ionic solids: When an ionic solid is placed in water, the polar water molecules interact with the positive and negative ions in the solid.

Describe the process of dissolution: Water molecules surround the individual ions, with the oxygen side facing positive ions and the hydrogen side facing negative ions, stabilizing them in solution. This process is called hydration or solvation.

Conclude why ionic solids dissolve: Because water molecules stabilize the separated ions, they overcome the ionic bonds in the solid, causing the ionic solid to dissolve.