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 equations best represents the behavior of BaSO_4 in water?

BaSO_4 (s) ightarrow BaSO_4 (aq)

BaSO_4 (aq) ightarrow Ba^{2+} (aq) + SO_4^{2-} (aq)

BaSO_4 (s) ightarrow Ba^{2+} (s) + SO_4^{2-} (s)

BaSO_4 (s) ightarrow Ba^{2+} (aq) + SO_4^{2-} (aq)

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Verified step by step guidance

Recognize that barium sulfate (BaSO_4) is a sparingly soluble salt, meaning it does not dissolve significantly in water but does dissociate slightly into its ions.

Understand that when a solid ionic compound dissolves in water, it dissociates into its constituent ions in aqueous form, not as solids or as the undissolved compound in solution.

Write the dissolution and dissociation process of BaSO_4 in water as an equilibrium reaction where solid BaSO_4 separates into barium ions (Ba^{2+}) and sulfate ions (SO_4^{2-}), both in aqueous form.

Express this process with the correct chemical equation: $\text{BaSO}_4 (s) \rightarrow \text{Ba}^{2+} (aq) + \text{SO}_4^{2-} (aq)$, indicating the solid salt dissociates into aqueous ions.

Note that the other options are incorrect because BaSO_4 does not simply dissolve as the intact compound in aqueous form, nor does it dissociate into solid ions.