Partial molar quantities in mixtures of ideal gases

22 PARTIAL MOLAR QUANTITIES IN MIXTURES OF IDEAL GASES 

The various partial molar quantities for the ideal gas are obtained from u,-. From Eq. (11.13), 

Similarly, differentiation of Pi with respect to pressure, keeping T and all rii constant, yields 

For an ideal gas mixture we have V = nRT/p, where n is the total number of moles of all the gases in the mixture. Therefore 

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