Question

The vapour pressure of ethanol and methanol are 44.0 mm and 88.0 mm of Hg. An ideal solution is formed at the same temperature by
mixing 60 gm ethanol with 40 gm methanol. Calculate the total
vapour pressure of the solution and the mole fraction of ethanol and methanol in vapour phase.​

Answer 1

Answer:

The total pressure is given by:

P = ∑xiPi

P = 1/2 x 81 + 1/2 x 45

P = 63 kPa

Answer 2

Answer:

Hg respectively. An ideal solution is formed at the same temperature by mixing 60 g of ethanol with 40 g of methanol. Calculate the total vapour pressure of the solution and the mole fraction of methanol in the vapour. ... The vapour pressures of ethanol and methanol are 44.5 mm and 88.7 mm Hg respectively. An ideal ...