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

Naming Ionic Compounds

General Chemistry

3. Chemical Reactions

Naming Ionic Compounds

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Multiple Choice

Which of the following compounds contains the lead(II) ion?

PbCl2

Pb(NO3)4

PbO2

PbSO4

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Verified step by step guidance

Understand that the lead(II) ion is represented as Pb^{2+}, meaning lead has a +2 oxidation state in the compound.

Analyze each compound to determine the oxidation state of lead by considering the charges of the other ions present.

For PbCl_2, chloride ions (Cl^-) each have a -1 charge, and since there are two chloride ions, the total negative charge is -2. To balance this, lead must be +2, so Pb is in the +2 oxidation state.

For Pb(NO_3)_4, nitrate ions (NO_3^-) each have a -1 charge, and with four nitrate ions, the total negative charge is -4. To balance this, lead must be +4, so Pb is in the +4 oxidation state.

For PbO_2, oxygen typically has a -2 charge, and with two oxygen atoms, the total negative charge is -4. To balance this, lead must be +4, so Pb is in the +4 oxidation state. For PbSO_4, sulfate (SO_4^{2-}) has a -2 charge, so lead must be +2 to balance, indicating Pb^{2+}.