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 one of the following compounds is most soluble in water?

NaNO_3

BaSO_4

AgCl

PbI_2

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Verified step by step guidance

Step 1: Understand that solubility in water depends on the compound's ability to dissociate into ions and the lattice energy of the solid. Ionic compounds with highly soluble ions tend to dissolve better in water.

Step 2: Recognize that NaNO_3 (sodium nitrate) is composed of Na^+ and NO_3^- ions, both of which are generally very soluble in water due to their strong hydration and low lattice energy.

Step 3: Compare the other compounds: BaSO_4, AgCl, and PbI_2 are all sparingly soluble salts because they have higher lattice energies and their ions do not interact as favorably with water molecules.

Step 4: Recall the solubility rules: nitrates (NO_3^-) are typically soluble with no exceptions, while sulfates, chlorides, and iodides have exceptions that reduce their solubility, especially with heavy metals like Ba^{2+}, Ag^+, and Pb^{2+}.

Step 5: Conclude that NaNO_3 is the most soluble compound in water among the given options because it fully dissociates and its ions are highly hydrated, making it much more soluble than BaSO_4, AgCl, or PbI_2.