The Henry s law constant for O2 in water at 25 C is 1.27 10 3M/atm and the mole fraction of O2 in the atmosphere is 0.21. Calculate the solubility of O2 in water at 25 C at an atmospheric pressure of 1.00 atm.Strategy: Use Dalton s law of partial pressures to calculate the partial pressure of oxygen.

Question

The Henry s law constant for O2 in water at 25 C is 1.27 10 3M/atm and the mole fraction of O2 in the atmosphere is 0.21. Calculate the solubility of O2 in water at 25 C at an atmospheric pressure of 1.00 atm.Strategy:   Use Dalton s law of partial pressures to calculate the partial pressure of oxygen.

TuteeHUB · Accepted Answer

2.7 10<sup>-4</sup>M

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n  Use Henry s law to calculate the solubility, expressed as the concentration of dissolved gas.

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2.5 10-4 M

TuteeHUB · Answer

2.1 10-4 M

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2.3 10-4 M

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2.7 10-4M

1.	The Henry s law constant for O2 in water at 25 C is 1.27 10 3M/atm and the mole fraction of O2 in the atmosphere is 0.21. Calculate the solubility of O2 in water at 25 C at an atmospheric pressure of 1.00 atm.Strategy: Use Dalton s law of partial pressures to calculate the partial pressure of oxygen.
A.	n Use Henry s law to calculate the solubility, expressed as the concentration of dissolved gas.
B.	2.5 10<sup>-4</sup> M
C.	2.1 10<sup>-4</sup> M
D.	2.3 10<sup>-4</sup> M
E.	2.7 10<sup>-4</sup>M
Answer» E. 2.7 10<sup>-4</sup>M

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