Question

If the vapour pressures of pure a and pure b at 298 k are 60 and 15 torr respectively, what would be the mole fraction of a in vapour phase (at this temperature) in a solution that contains 20 mole per cent of a in the (a +

b.Binary mixture in the liquid phase ?

Answer 1

calculate the mass of 1 dm3 of NH3 gas at 30°c 1000mmhg pressure considering tha NH3 behave ideally?

V1 = 302 ml

P1 = 0.52 atm

P2 = ?

V2 = 69 ml Boyle's Law P1V1 = P2V2

P2 = P1V1/V2 P2 =

(0.52 atm)(302 ml)/69 ml

P2 = 2.3 atm...