CO(g) is dissolved in H2O at 25oC and 0.010 atm. Henry's law constant for this system is 5.80×104 atm. Thus, mole fraction of CO(g) is
A
8.28×10−7
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B
0.01
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C
0.99
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D
1.72×10−7
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Solution
The correct option is D1.72×10−7 The mole fraction of a gas in solution is related to partial pressure of the gas above the solution by Henry's law. pCO=χCOKH ∴χCO=pCOKH=0.01atm5.8×104atm =1.72×10−7