Table of contents

1. Intro to General Chemistry3h 48m
2. Atoms & Elements4h 16m
3. Chemical Reactions4h 10m
4. BONUS: Lab Techniques and Procedures1h 36m
5. BONUS: Mathematical Operations and Functions48m
6. Chemical Quantities & Aqueous Reactions3h 53m
7. Gases3h 49m
8. Thermochemistry2h 37m
9. Quantum Mechanics2h 58m
10. Periodic Properties of the Elements3h 9m
11. Bonding & Molecular Structure3h 29m
12. Molecular Shapes & Valence Bond Theory1h 57m
13. Liquids, Solids & Intermolecular Forces2h 23m
14. Solutions3h 1m
15. Chemical Kinetics2h 53m
16. Chemical Equilibrium2h 29m
17. Acid and Base Equilibrium5h 1m
18. Aqueous Equilibrium4h 47m
19. Chemical Thermodynamics1h 50m
20. Electrochemistry2h 42m
21. Nuclear Chemistry2h 36m
22. Organic Chemistry5h 7m
23. Chemistry of the Nonmetals2h 39m
24. Transition Metals and Coordination Compounds3h 16m

6. Chemical Quantities & Aqueous Reactions

Osmolarity

General Chemistry

6. Chemical Quantities & Aqueous Reactions

Osmolarity

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Multiple Choice

Which ion is the greatest determinant of intracellular osmolarity and cell volume?

Potassium (K+)

Sodium (Na+)

Chloride (Cl-)

Calcium (Ca2+)

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Verified step by step guidance

Understand the concept of osmolarity: Osmolarity is a measure of the concentration of solute particles in a solution. In biological systems, it is crucial for maintaining cell volume and function.

Identify the role of ions in osmolarity: Different ions contribute to osmolarity in various compartments of the body. Intracellular osmolarity is primarily influenced by ions within the cell.

Consider the major intracellular ions: Potassium (K+) is the primary cation inside cells, while Sodium (Na+) is the primary cation outside cells. Chloride (Cl-) and Calcium (Ca2+) also play roles but are more significant in extracellular fluid.

Evaluate the impact of Potassium (K+): Potassium is the most abundant intracellular cation and plays a critical role in maintaining cell volume and osmotic balance.

Conclude that Potassium (K+) is the greatest determinant of intracellular osmolarity and cell volume due to its high concentration inside cells compared to other ions.