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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

14. Solutions

Henry's Law Calculations

General Chemistry

14. Solutions

Henry's Law Calculations

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Multiple Choice

What is the millimolar solubility of oxygen gas, O2, in water at 16 °C, if the pressure of oxygen is 1.00 atm? Express the millimolar concentration numerically to two significant figures.

0.43 mM

0.65 mM

0.10 mM

0.21 mM

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Verified step by step guidance

Identify that the problem involves calculating the solubility of a gas in a liquid, which can be determined using Henry's Law.

Recall Henry's Law, which states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid. The formula is:

C = k P_{O}

, where

C

is the concentration of the gas,

k

is Henry's Law constant, and

P_{O}

is the partial pressure of the gas.

Determine the value of Henry's Law constant,

k

, for oxygen in water at 16 °C. This value is typically found in tables or literature and is necessary for the calculation.

Substitute the given pressure of oxygen, 1.00 atm, and the Henry's Law constant into the formula to calculate the concentration of oxygen in molarity (M).

Convert the molarity to millimolarity (mM) by multiplying the result by 1000, as 1 M = 1000 mM. This will give you the millimolar solubility of oxygen in water at the specified conditions.