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 is the correct chemical formula for lead(II) carbonate?

PbCO3

Pb2CO3

Pb2(CO3)2

Pb(CO3)2

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Verified step by step guidance

Identify the ions involved in lead(II) carbonate. Lead(II) indicates the lead ion has a charge of +2, written as Pb^{2+}. The carbonate ion is CO_3^{2-}, with a charge of -2.

Determine the ratio of ions needed to balance the charges. Since Pb^{2+} has a +2 charge and CO_3^{2-} has a -2 charge, one Pb^{2+} ion will balance with one CO_3^{2-} ion to make a neutral compound.

Write the chemical formula by combining the ions in the ratio that balances the charges. Since the charges are equal and opposite, the formula is PbCO_3 without any additional subscripts.

Check the options given: PbCO3, Pb2CO3, Pb2(CO3)2, and Pb(CO3)2. The correct formula should have one Pb and one CO_3 group, so PbCO_3 is correct.

Remember that subscripts indicate the number of ions, and parentheses are used when multiple polyatomic ions are present. Since only one carbonate ion is needed, no parentheses or additional subscripts are necessary.