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 chemical equations represents a precipitation reaction?

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

CO2(g) + H2O(l) → H2CO3(aq)

KNO3(aq) + NaCl(aq) → KCl(aq) + NaNO3(aq)

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

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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: Identify the physical states of the reactants and products in each equation. Look for a solid (s) forming from aqueous (aq) reactants.

Step 3: Analyze the first equation: NaCl(aq) + AgNO3(aq) → AgCl(s) + NaNO3(aq). Here, AgCl is a solid precipitate formed from two aqueous solutions, indicating a precipitation reaction.

Step 4: Check the other equations: the second produces H2CO3(aq) (aqueous), the third only rearranges aqueous ions without forming a solid, and the fourth is an acid-base neutralization producing water and aqueous salt, not a precipitate.

Step 5: Conclude that the equation with AgCl(s) as a product represents a precipitation reaction because it forms an insoluble solid from aqueous reactants.