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

Molecular Equations

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Molecular Equations

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Multiple Choice

Which of the following is the correct molecular equation for the reaction between calcium bromide (CaBr2) and silver nitrate (AgNO3) in aqueous solution?

CaBr2 (aq) + 2 AgNO3 (aq) → AgBr (aq) + Ca(NO3)2 (s)

CaBr2 (aq) + 2 AgNO3 (aq) → 2 AgBr (s) + Ca(NO3)2 (aq)

CaBr2 (aq) + AgNO3 (aq) → CaBr2 (s) + AgNO3 (aq)

CaBr2 (aq) + AgNO3 (aq) → AgBr (s) + Ca(NO3)2 (aq)

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Verified step by step guidance

Identify the reactants and products in the given chemical reaction: Calcium bromide (CaBr2) and silver nitrate (AgNO3) are the reactants, while silver bromide (AgBr) and calcium nitrate (Ca(NO3)2) are the products.

Determine the physical states of the reactants and products: Calcium bromide and silver nitrate are both aqueous (aq), silver bromide is a solid (s) due to its low solubility in water, and calcium nitrate is aqueous (aq).

Write the balanced molecular equation: Ensure that the number of atoms of each element is the same on both sides of the equation. The balanced equation should reflect the stoichiometry of the reaction.

Check the solubility rules: Silver bromide (AgBr) is insoluble in water, which means it will precipitate out of the solution as a solid. Calcium nitrate remains in solution as it is soluble.

Verify the balanced equation: The correct molecular equation should be CaBr2 (aq) + 2 AgNO3 (aq) → 2 AgBr (s) + Ca(NO3)2 (aq), which shows the formation of a solid precipitate and maintains the balance of atoms.