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 copper(II) sulfate?

CuSO_3

Cu_2SO_3

Cu_2SO_4

CuSO_4

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Verified step by step guidance

Identify the charge on the copper ion in copper(II) sulfate. The (II) indicates copper has a +2 charge, so the ion is Cu^{2+}.

Determine the charge on the sulfate ion. Sulfate is a polyatomic ion with the formula SO_4^{2-}, carrying a -2 charge.

Combine the copper ion and sulfate ion in a ratio that balances the total positive and negative charges to zero. Since Cu^{2+} and SO_4^{2-} have charges of equal magnitude but opposite sign, they combine in a 1:1 ratio.

Write the chemical formula by placing the metal ion symbol first followed by the polyatomic ion without any subscript numbers since the charges balance one-to-one, resulting in CuSO_4.

Verify that the formula CuSO_4 is electrically neutral by confirming the total positive charge (+2 from Cu^{2+}) balances the total negative charge (-2 from SO_4^{2-}).