Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

3. Acids and Bases

Acids and Bases

Organic Chemistry

3. Acids and Bases

Acids and Bases

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Multiple Choice

Which of the following statements correctly describes the difference between a strong acid and a weak acid?

A strong acid completely dissociates in water, while a weak acid only partially dissociates.

A strong acid has a higher pH than a weak acid.

A strong acid has a lower concentration than a weak acid.

A strong acid is always more corrosive than a weak acid.

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Verified step by step guidance

Understand the concept of acid dissociation: A strong acid is one that completely dissociates into its ions in water, meaning it releases all of its hydrogen ions (H⁺) into the solution. A weak acid only partially dissociates, meaning only some of its hydrogen ions are released into the solution.

Consider the pH scale: The pH scale measures the acidity of a solution. Strong acids, which release more hydrogen ions, typically result in a lower pH compared to weak acids. Therefore, a strong acid does not have a higher pH than a weak acid.

Evaluate concentration: The concentration of an acid refers to the amount of acid present in a solution. The strength of an acid (strong vs. weak) is independent of its concentration. A strong acid can be present in a solution at any concentration, and similarly, a weak acid can be concentrated or dilute.

Assess corrosiveness: Corrosiveness is a property that depends on various factors, including the type of acid and its concentration. While strong acids can be more corrosive due to their complete dissociation, it is not a rule that they are always more corrosive than weak acids.

Identify the correct statement: Based on the understanding of dissociation, pH, concentration, and corrosiveness, the correct statement is that a strong acid completely dissociates in water, while a weak acid only partially dissociates.