Answer to Question #98982 in General Chemistry for m

Question

A gaseous mixture contains 405.0 Torr H2(g), 379.3 Torr N2(g), and81.1 Torr Ar(g). Calculate the mole fraction, of each of these gases.

Answer 1

mole fraction gas = partial pressure gas / total pressure

total pressure = 405.0 torr + 379.3 torr + 81.1 torr = 865.4 torr

mole fraction H2 = 405.0 torr / 865.4 torr = 0.468

mole fraction N2 = 379.3 torr / 865.4 torr = 0.438

mole fraction Ar = 81.1 torr / 865.4 torr = 0.094