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 51m
7. Gases3h 49m
8. Thermochemistry2h 35m
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 34m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Molecular Equations

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Molecular Equations

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Multiple Choice

Predict whether a chemical reaction occurs and write the balanced molecular equation.
Ag₂SO₄ (aq) + KCl (aq) →

Ag₂SO₄ (aq) + KCl (aq) → AgCl (s) + K₂SO₄ (aq)

Ag₂SO₄ (aq) + 2 KCl (aq) → 2 AgCl (s) + K₂SO₄ (aq)

Ag₂SO₄ (aq) + 2 KCl (aq) → 2 AgCl (aq) + K₂SO₄ (aq)

No reaction

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Verified step by step guidance

Identify the reactants and products in the given chemical equation: Ag2SO4 (aq) + KCl (aq) → AgCl (s) + K2SO4 (aq).

Determine the solubility of each compound in the reaction. Ag2SO4 is slightly soluble, KCl is soluble, AgCl is insoluble, and K2SO4 is soluble in water.

Use the solubility rules to predict the formation of a precipitate. Since AgCl is insoluble, it will precipitate out of the solution, indicating a chemical reaction occurs.

Write the balanced molecular equation by ensuring the number of atoms of each element is the same on both sides of the equation. Balance the equation: Ag2SO4 (aq) + 2 KCl (aq) → 2 AgCl (s) + K2SO4 (aq).

Verify the balanced equation by counting the atoms of each element on both sides: 2 Ag, 1 S, 4 O, 2 K, and 2 Cl on both sides, confirming the equation is balanced.