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

2. Atoms & Elements

Ions

General Chemistry

2. Atoms & Elements

Ions

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Multiple Choice

When water ionizes, it produces an ion with a positive charge and an ion with a negative charge. Which pair of ions is formed?

Na^+ and Cl^-

H^+ and OH^-

K^+ and NO_3^-

H_2^+ and O^2-

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Verified step by step guidance

Understand that when water ionizes, it undergoes a process called autoionization or self-ionization, where water molecules react with each other to form ions.

Recall that water (H_2O) can split into a positively charged ion and a negatively charged ion. The positively charged ion is a proton (H^+), often represented as a hydronium ion (H_3O^+), and the negatively charged ion is hydroxide (OH^-).

Identify the ions formed from water ionization: the positive ion is H^+ and the negative ion is OH^-.

Compare the given options to the ions formed from water ionization. Na^+ and Cl^- come from salt (NaCl), K^+ and NO_3^- come from potassium nitrate, and H_2^+ and O^2- are not typical ions formed from water.

Conclude that the correct pair of ions formed when water ionizes is H^+ and OH^-.