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# Solution: A gas mixture contains CO, Ar and H 2. What is the total pressure of the mixture, if the mole fraction of H2 is 0.350 and the pressure of H 2 is 0.480 atm?

###### Problem

A gas mixture contains CO, Ar and H 2. What is the total pressure of the mixture, if the mole fraction of H2 is 0.350 and the pressure of H 2 is 0.480 atm?

###### Solution

We’re being asked to calculate the total pressure of a gas mixture containing CO, Ar, and H2

Recall that the partial pressure of a gas (PGas) in a mixture is given by:

$\overline{){{\mathbf{P}}}_{{\mathbf{gas}}}{\mathbf{=}}{{\mathbf{\chi }}}_{{\mathbf{gas}}}{{\mathbf{P}}}_{{\mathbf{total}}}}$

where:

χGas = mole fraction of the gas

Ptotal = total pressure of the gas mixture

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