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 substances is compatible with both water and oil, acting as an emulsifier?

Sucrose (C12H22O11)

Calcium carbonate (CaCO3)

Sodium stearate

Sodium chloride (NaCl)

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Verified step by step guidance

Understand the role of an emulsifier: an emulsifier is a substance that can interact with both water (polar) and oil (nonpolar) phases, allowing them to mix and form a stable emulsion.

Analyze the polarity of each substance: water is polar, so substances that are polar or have both polar and nonpolar parts can interact with it; oil is nonpolar, so substances must have nonpolar characteristics to interact with oil.

Evaluate sucrose (C12H22O11): it is a sugar with many hydroxyl (–OH) groups, making it highly polar and soluble in water, but it lacks nonpolar parts to interact with oil effectively.

Evaluate calcium carbonate (CaCO3) and sodium chloride (NaCl): both are ionic compounds that dissolve well in water but do not have nonpolar regions to interact with oil, so they cannot act as emulsifiers.

Evaluate sodium stearate: it is a salt of a fatty acid with a long nonpolar hydrocarbon chain and a polar carboxylate group, allowing it to interact with both oil (via the hydrocarbon tail) and water (via the polar head), making it an effective emulsifier.