In a gaseous mixture at 20 degree centigrade the partial pressures of the components are hydrogen- 120 torr, CO2- 200 torr, CH4- 320 torr, and C2H4- 105 torr. What are the mole fractions and volume fractions of each component with respect to the mixture?

Dear Student


The partial pressure of :

PH = 120 torr

PCO2 = 200 torr

PCH4 = 320 torr

PC2H4 = 105 torr


Therefore, Total Partial Pressure, PTotal = (120 + 200 + 320 + 105) torr = 745 torr


Thus, Mole Fraction can be estimated - 

We know, PH = χH . PTotal

where, χH is the mole fraction of Hydrogen, H

χH120745  = 0.16

And, 

χCO2200745 = 0.26

χCH4320745 = 0.429

χC2H4105745  = 0.14


Though the volume of gas is not provided but for an ideal gas, mole fraction remain equivalent to that of volume fraction.

Therefore, here we can apply the same rule, since we don't have any available data.



Regards

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