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 reactions is an example of a precipitation reaction according to solubility rules?

CO2(g) + H2O(l) → H2CO3(aq)

NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq)

HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

KNO3(aq) + H2O(l) → K+(aq) + NO3-(aq)

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Verified step by step guidance

Step 1: Understand what a precipitation reaction is. A precipitation reaction occurs when two aqueous solutions react to form an insoluble solid called a precipitate.

Step 2: Review the solubility rules to identify which products are insoluble solids. Most salts of Na+, K+, and NO3- are soluble, while some salts like AgCl are insoluble and form precipitates.

Step 3: Analyze each reaction to see if an insoluble solid forms: - For CO2(g) + H2O(l) → H2CO3(aq), no solid forms; this is a gas dissolving in water. - For NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq), AgCl is an insoluble solid precipitate. - For HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l), all products are aqueous or liquid; no precipitate forms. - For KNO3(aq) + H2O(l) → K+(aq) + NO3-(aq), this is just dissociation, no precipitate.

Step 4: Conclude that the reaction forming AgCl(s) is the precipitation reaction because it produces an insoluble solid according to solubility rules.

Step 5: Remember that precipitation reactions are important in identifying ions in solution and are characterized by the formation of a solid from two aqueous reactants.