Question

a gasous mixture contains 1.1 bar h2 and 4.2 bar n2 what is mole fraction of n2

Answer 1

by using Dalton's law of partial pressure :
total pressure of mixture × mole fraction of N2 = partial pressure of N2
so, 5.3 × mole fraction of N2 = 4.2
mole fraction of N2 = 4.2 / 5.3 = 0.79