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

15. Analytical Techniques:IR, NMR, Mass Spect

Purpose of Analytical Techniques

Organic Chemistry

15. Analytical Techniques:IR, NMR, Mass Spect

Purpose of Analytical Techniques

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Multiple Choice

In the context of analytical techniques, what is the primary purpose of a positive control?

To establish a baseline measurement for comparison

To ensure the test is functioning correctly by providing a known response

To eliminate any potential contamination in the experiment

To verify the accuracy of the calibration curve

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Verified step by step guidance

Understand the role of controls in experiments: Controls are essential in experiments to validate the results and ensure the reliability of the test. They help in distinguishing between true positive results and false positives or negatives.

Define a positive control: A positive control is a part of the experiment that is expected to give a positive result. It is used to confirm that the experimental setup is capable of producing a positive outcome.

Identify the purpose of a positive control: The primary purpose of a positive control is to ensure that the test is functioning correctly by providing a known response. This helps in verifying that the experimental conditions are suitable for detecting the desired effect.

Differentiate from other controls: Unlike a negative control, which should not produce a response, a positive control is designed to produce a known response, thereby confirming the test's ability to detect the effect.

Apply the concept: In any analytical technique, using a positive control helps in validating the test procedure. If the positive control does not produce the expected result, it indicates a problem with the experimental setup or reagents, prompting further investigation.