We’re being asked to determine the mass of O2 that will dissolve in 1.75 L H2O.
Recall that the solubility of a gas is given by Henry’s law:
Sgas = solubility of the gas (in mol/L or M)
kH = Henry’s law constant for the gas
Pgas = partial pressure of the gas
The Henry's law constant (k H) for O2 in water at 20°C is 1.28 x 10 -3 mol/L•atm. How many grams of O2 will dissolve in 1.75 L of H 2O in contact with air, where the partial pressure of O2 is 1.32 atm?
A. 0.0541 g
B. 0.0473 g
C. 0.0946 g
D. 0.0270 g
E. 0.946 g
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