We’re being asked to calculate the partial pressure of O2 in a mixture of N2 and O2.
Recall that the partial pressure of a gas (PGas) in a mixture is given by:
where χGas = mole fraction of the gas and Ptotal = total pressure of the gas mixture.
The mole fraction of the gas is then given by:
In a mixture of N 2 and O2 gases, the mol fraction of N 2 is found to be 0.700. The total pressure of the mixture is 1.42 atm. What is the partial pressure of O2 in the mixture?
a) 0.211 atm
b) 0.426 atm
c) 0.493 atm
d) 0.994 atm
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