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

Organic Chemistry Reactions

Organic Chemistry

3. Acids and Bases

Organic Chemistry Reactions

Previous problemNext problem

Struggling with Organic Chemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

In the context of organic chemistry reactions, which of the following is a reason for performing a serial dilution during the standard plate count method?

To enhance the solubility of organic compounds.

To increase the concentration of reactants in the solution.

To ensure that the reaction reaches completion.

To obtain a countable number of colonies for accurate measurement.

Previous problemNext problem

Verified step by step guidance

Understand the context: The standard plate count method is a microbiological technique used to estimate the number of viable microorganisms in a sample by counting the number of colonies formed on an agar plate.

Recognize the purpose of serial dilution: Serial dilution is a stepwise dilution of a substance in solution. It is often used to reduce the concentration of cells or molecules to a manageable level for analysis.

Identify the goal of the standard plate count: The main objective is to obtain a countable number of colonies, typically between 30 and 300, to ensure statistical accuracy and reliability in the measurement.

Relate serial dilution to the goal: By performing serial dilutions, the concentration of microorganisms is reduced, allowing for the isolation of individual colonies that can be easily counted.

Conclude the reason for serial dilution: The correct reason for performing a serial dilution in this context is to obtain a countable number of colonies for accurate measurement, not to enhance solubility, increase reactant concentration, or ensure reaction completion.