A solution of pentane and ethanol (CH3CH2OH) that is 50.% pentane by mass is boiling at 57.2°C. The vapor is collected and cooled until it condenses to form a new solution. Calculate the percent by mass of pentane in the new solution. Here's some data you may need: normal boiling point density vapor pressure at 57.2°C pentane 36.°C 0.63gmL 1439.torr ethanol 78.°C 0.79gmL 326.torr Be sure your answer has 2 significant digits. dont round during math only for answer! Note for advanced students: you may assume the solution and vapor above it are ideal.
A solution of pentane and ethanol (CH3CH2OH) that is 50.% pentane by mass is boiling at 57.2°C. The vapor is collected and cooled until it condenses to form a new solution. Calculate the percent by mass of pentane in the new solution. Here's some data you may need: normal boiling point density vapor pressure at 57.2°C pentane 36.°C 0.63gmL 1439.torr ethanol 78.°C 0.79gmL 326.torr Be sure your answer has 2 significant digits. dont round during math only for answer! Note for advanced students: you may assume the solution and vapor above it are ideal.
Chapter11: Properties Of Solutions
Section: Chapter Questions
Problem 72E: A solution contains 3.75 g of a nonvolatile pure hydrocarbon in 95 g acetone. The boiling points of...
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A solution of pentane and ethanol (CH3CH2OH)
that is 50.% pentane by mass is boiling at 57.2°C. The vapor is collected and cooled until it condenses to form a new solution.
Calculate the percent by mass of pentane in the new solution. Here's some data you may need:
| normal boiling point | density | vapor pressure at
57.2°C
|
|
| pentane |
36.°C
|
0.63gmL
|
1439.torr
|
| ethanol |
78.°C
|
0.79gmL
|
326.torr
|
Be sure your answer has 2 significant digits.
dont round during math only for answer!
Note for advanced students: you may assume the solution and vapor above it are ideal.
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