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

3. Chemical Reactions

Balancing Chemical Equations

General Chemistry

3. Chemical Reactions

Balancing Chemical Equations

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Multiple Choice

Which of the following is the balanced molecular equation for the reaction between NaOH and HNO₃?

NaOH + 2HNO₃ → Na(NO₃)₂ + H₂O

NaOH + HNO₃ → NaNO₂ + H₂O

2NaOH + HNO₃ → NaNO₃ + 2H₂O

NaOH + HNO₃ → NaNO₃ + H₂O

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Verified step by step guidance

Identify the reactants and products in the chemical reaction. The reactants are NaOH (sodium hydroxide) and HNO₃ (nitric acid), and the products are NaNO₃ (sodium nitrate) and H₂O (water).

Write the unbalanced chemical equation using the chemical formulas of the reactants and products: NaOH + HNO₃ → NaNO₃ + H₂O.

Check the number of atoms of each element on both sides of the equation to ensure they are equal. In this case, there is 1 Na, 1 O, 1 H, and 1 N on both sides, indicating the equation is balanced.

Verify that the stoichiometry of the reaction is correct. Each molecule of NaOH reacts with one molecule of HNO₃ to produce one molecule of NaNO₃ and one molecule of H₂O, which matches the balanced equation.

Conclude that the balanced molecular equation for the reaction between NaOH and HNO₃ is NaOH + HNO₃ → NaNO₃ + H₂O, as it satisfies the law of conservation of mass with equal numbers of each type of atom on both sides.