Determine the atmospheric pressure and calculate the solubility of oxygen in the lake in the Rocky...
Determine the atmospheric pressure and calculate the solubility of oxygen in the lake in the Rocky Mountains. The Henry's law constant at 5°C is 1.6 x10-3 mol/lit atm. The total atmospheric pressure in Denver is 0.66 atm. The abundance of O2 remains constant at 20.95%.
Homework Answers
Mole fraction of O2 = Volume fraction = %O2 in air / 100 = 0.2095
From Henry's law, we have the relation:
PO2 = mole fractionn of O2 * Atmospheric pressure = 0.2095 * 0.66 = 0.1383 atm
Solubility = KH * PO2 = 1.6 * 10-3 * 0.1383 = 2.213 * 10-4 mol/liter
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