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1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 17m
3. Chemical Reactions4h 9m
4. BONUS: Lab Techniques and Procedures1h 38m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 51m
7. Gases3h 55m
8. Thermochemistry2h 36m
9. Quantum Mechanics2h 56m
10. Periodic Properties of the Elements3h 5m
11. Bonding & Molecular Structure3h 27m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 22m
14. Solutions2h 57m
15. Chemical Kinetics2h 46m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 34m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

17. Acid and Base Equilibrium

pH of Weak Bases

General Chemistry17. Acid and Base EquilibriumpH of Weak Bases

4:22 minutes

Problem 91

Textbook Question

Textbook Question

Caffeine (C8H10N4O2) is a weak base with a pKb of 10.4. Calculate the pH of a solution containing a caffeine concentration of 455 mg>L.

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