Help with Part C please, Part B A solution is composed of 1.70 mol cyclohexane (

Question

Help with Part C please, Part B A solution is composed of 1.70 mol cyclohexane (Pg 97.6 torr) and 2.90 mol acetone (P-229.5 torr). What is the total vapor pressure Potal above this solution? Express your answer with the appropriate units. View Avallable Hint(s) Potal = 181 torr Previous Answers Correct If a third volatile component had been present in this solution, the total pressure would be calculated in a similar manner but would involve three terms rather than two. For example, Part C 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, Xey(vapor), is cyclohexane? Express your answer numerically. View Available Hint(s)

Explanation / Answer

no of moles of cyclohexane (ncy) = 1.7 moles

no of moles of actone         (nac)    = 2.9 moles

mole fraction of cyclohexane Xcy    = ncy/ncy + nac

                                                          = 1.7/1.7+2.9

                                                          = 1.7/4.6   = 0.37

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