In: Chemistry
As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both cyclohexane vapor and acetone vapor. What mole fraction of the vapor above the solution, X cy (vapor) , is cyclohexane?
A solution is composed of 1.10 mol cyclohexane (P ∘ cy =97.6 torr ) and 2.30 mol acetone (P ∘ ac =229.5 torr ). What is the total vapor pressure P total above this solution? i found the solution
P total = |
187 torr |
A solution is composed of 1.10 mol cyclohexane (P ∘ cy =97.6 torr ) and 2.30 mol acetone (P ∘ ac =229.5 torr ). What is the total vapor pressure P total above this solution? i found the solution
cyclohexane mole fraction = 1.10 / 1.10 + 2.30
= 0.324
acetone mole fraction = 2.30 / 1.10 + 2.30
= 0.676
pratial pressure of cyclohexane = mole fraction x pure state pressure
= 0.324 x 97.6
= 31.62 torr
pratial pressure of acetone = mole fraction x pure state pressure
= 0.676 x 229.5
= 155.1 torr
total pressure = 31.62 torr + 155.1 torr
= 186.72 torr
= 187 torrr