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

23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides

Chemical Reactions of Phosphate Anhydrides

Organic Chemistry

23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides

Chemical Reactions of Phosphate Anhydrides

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Multiple Choice

Which of the following is the major reservoir for phosphorus in the phosphorus cycle?

Living organisms

Ocean water

Atmosphere

Sedimentary rocks

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Verified step by step guidance

Understand the phosphorus cycle: The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere.

Identify the role of sedimentary rocks: In the phosphorus cycle, sedimentary rocks are the major reservoir. Phosphorus is primarily found in the form of phosphate ions (PO₄³⁻) in these rocks.

Consider the other options: Living organisms, ocean water, and the atmosphere contain phosphorus, but in much smaller quantities compared to sedimentary rocks.

Recognize the lack of atmospheric phosphorus: Unlike carbon or nitrogen, phosphorus does not have a gaseous phase under normal conditions, so it is not found in the atmosphere.

Conclude with the major reservoir: Given the above points, sedimentary rocks are the largest reservoir of phosphorus in the phosphorus cycle, storing it in mineral form until it is released through weathering.