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 set of chemical name and chemical formula for the same compound is correct?

Calcium nitrate — CaNO2

Magnesium oxide — MgCl2

Potassium sulfate — KCl

Sodium chloride — NaCl

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Verified step by step guidance

Step 1: Understand that each chemical name corresponds to a specific chemical formula based on the elements involved and their charges. For example, calcium nitrate consists of calcium ions and nitrate ions.

Step 2: Recall the charges of common ions: Calcium ion is Ca^{2+}, nitrate ion is NO_3^{-}, magnesium ion is Mg^{2+}, oxide ion is O^{2-}, potassium ion is K^{+}, sulfate ion is SO_4^{2-}, sodium ion is Na^{+}, and chloride ion is Cl^{-}.

Step 3: Use the charges to determine the correct formula by balancing the total positive and negative charges so the compound is electrically neutral. For example, calcium nitrate should have the formula Ca(NO_3)_2 because one Ca^{2+} balances two NO_3^{-} ions.

Step 4: Check each given pair: verify if the formula matches the name by comparing the ions and their quantities. For example, CaNO_2 is incorrect for calcium nitrate because NO_2^{-} is nitrite, not nitrate.

Step 5: Confirm that sodium chloride (NaCl) is correctly matched because sodium ion (Na^{+}) and chloride ion (Cl^{-}) combine in a 1:1 ratio to form NaCl.