Answer :
Mole fraction and Partial pressure can be calculated from the expression of mole and Ideal gas law.
Ideal gases are defined as the theoretical gasses that can be used to model the behavior of real gasses. In order for it to be considered ideal, individual gaseous particles must both not attract or repel one another and also not have any volume. The expression for ideal gas law is,
PV = n RT
Take an example, if a 6.000L tank at 19.2°C is filled with 18.0g of carbon monoxide gas and 10.6g of chlorine pentafluoride gas.
mole CO = 18/28 = 0.6428
mole ClF5 = 10.6/130.445 = 0.081260
then
mole total = 0.081260+0.6428 = 0.72406 mole
PV = n RT
P = n RT/V = (0.72406) (0.082) (19.2+273) / (6) = 2.89146 atm.
mole fraction CO = 0.6428 /0.72406 = 0.8877
Partial pressure of CO = 0.8877 *2.89146 = 2.5667 atm.
mole fraction CF5 = 1-0.8877 = 0.1123
Partial pressure of CF5 = 0.1123*2.89146 = 0.32471 atm.
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