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In: Chemistry

As you saw in Part B, the vapor above the cyclohexane-acetone solution is composed of both...

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

Expert Solution

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

queen_honey_blossom answered 4 months ago

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