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

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Multiple Choice

In an experiment involving the reduction of DCPIP, which of the following conditions would result in the greatest reduction of DCPIP after 60 minutes?

Tube with boiled chlorophyll and light exposure

Tube with chlorophyll in the dark

Tube with no chlorophyll and light exposure

Tube with chlorophyll and light exposure

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Verified step by step guidance

Understand the role of DCPIP: DCPIP (2,6-dichlorophenol-indophenol) is a chemical compound used as a redox dye. It changes color when it is reduced, which makes it useful for measuring electron transport in photosynthesis experiments.

Identify the conditions for reduction: DCPIP is reduced when it accepts electrons. In the context of photosynthesis, this occurs when chlorophyll absorbs light and initiates electron transport.

Analyze the experimental conditions: Consider the role of chlorophyll and light. Chlorophyll is essential for capturing light energy and facilitating electron transport, which is necessary for the reduction of DCPIP.

Evaluate the effect of light: Light exposure is crucial because it provides the energy needed for chlorophyll to excite electrons, which are then transferred to DCPIP, reducing it.

Determine the optimal condition: The tube with chlorophyll and light exposure will have the greatest reduction of DCPIP because both chlorophyll and light are present to drive the electron transport process, leading to the reduction of DCPIP.