Problem 9.15 At 39.9 ?C, a solution of ethanol ( x 1 = 0.9006, P ?1 = 130.4 Torr

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Problem 9.15

At 39.9 ?C, a solution of ethanol (x1 = 0.9006, P?1 = 130.4 Torr) and isooctane (P?2 = 43.9 Torr) forms a vapor phase with y1 = 0.6667 at a total pressure of 185.1Torr .

Part A

Calculate the activity of ethanol.

Express your answer using four significant figures.

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Part B

Calculate the activity of isooctane.

Express your answer using three significant figures.

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Part C

Calculate the activity coefficient of ethanol.

Express your answer using four significant figures.

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Part D

Calculate the activity coefficient of isooctane.

Express your answer using three significant figures.

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Part E

Calculate the total pressure that the solution would have if it were ideal.

Express your answer to four significant figures and include the appropriate units.

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Problem 9.15

At 39.9 ?C, a solution of ethanol (x1 = 0.9006, P?1 = 130.4 Torr) and isooctane (P?2 = 43.9 Torr) forms a vapor phase with y1 = 0.6667 at a total pressure of 185.1Torr .

Part A

Calculate the activity of ethanol.

Express your answer using four significant figures.

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Part B

Calculate the activity of isooctane.

Express your answer using three significant figures.

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Part C

Calculate the activity coefficient of ethanol.

Express your answer using four significant figures.

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Part D

Calculate the activity coefficient of isooctane.

Express your answer using three significant figures.

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Part E

Calculate the total pressure that the solution would have if it were ideal.

Express your answer to four significant figures and include the appropriate units.

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Provide Feedback

Explanation / Answer

Activity of Ethanol = 0.9504

Activity of iso Octane = 1.411

Activity coefficient of Ethanol = 1.055

Activity coefficient of isooctane = 14.20

Total pessure = 121.8 torr

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