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 correctly balanced equation for the reaction: H2O2(aq) + ClO2(aq) → ClO2(aq) + O2(g)?

H2O2(aq) + ClO2(aq) → ClO2(aq) + O2(g)

H2O2(aq) + 2 ClO2(aq) → 2 ClO2(aq) + O2(g)

H2O2(aq) + 2 ClO2(aq) → 2 ClO2(aq) + 2 O2(g)

H2O2(aq) + ClO2(aq) → ClO2(aq) + 2 O2(g)

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Verified step by step guidance

Identify the reactants and products in the given chemical equation: Reactants are H2O2(aq) and ClO2(aq), and products are ClO2(aq) and O2(g).

Write the unbalanced chemical equation: H2O2(aq) + ClO2(aq) → ClO2(aq) + O2(g).

Count the number of each type of atom on both sides of the equation. For example, count the number of hydrogen, oxygen, and chlorine atoms in the reactants and products.

Adjust the coefficients of the reactants and products to balance the number of each type of atom on both sides of the equation. Start by balancing the atoms that appear in only one reactant and one product, such as chlorine in ClO2.

Check that the total number of each type of atom is the same on both sides of the equation. If necessary, adjust the coefficients again to achieve balance, ensuring that the smallest whole number coefficients are used.