how do you find delta Tf of the solution and the molality of t-butanol solution? Name of SoluteWeight of test tube and t-butanolweight of emtpy test tubeweight of t-butanolfreezing point of t-butanolWeight of solute used for run #2Freezing point of solutionDelta Tf of the solutionMolatity of t-butanol solutionExperimental molar mass of solutePercent errorEthyl Paraben13.349 g8.661 g4.688 g25.0 deg C0.173 g23.0 deg C Temperature (deg C)454035301510500.000100.000200.000Cooling Curve Run #2.......•●300.000•••·Time (s)●400.000•500.000●●●●600.000700.000

Answered: Name of Solute Weight of test tube and…

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter11: Properties Of Solutions

Section: Chapter Questions

Problem 109AE: Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray...

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Question

how do you find delta Tf of the solution and the molality of t-butanol solution?

Name of Solute
Weight of test tube and t-butanol
weight of emtpy test tube
weight of t-butanol
freezing point of t-butanol
Weight of solute used for run #2
Freezing point of solution
Delta Tf of the solution
Molatity of t-butanol solution
Experimental molar mass of solute
Percent error
Ethyl Paraben
13.349 g
8.661 g
4.688 g
25.0 deg C
0.173 g
23.0 deg C

Temperature (deg C)
45
40
35
30
15
10
5
0
0.000
100.000
200.000
Cooling Curve Run #2
.......
•
●
300.000
•
•
•
·
Time (s)
●
400.000
•
500.000
●
●
●
●
600.000
700.000

Expert Solution

Step 1

There is a decrease in freezing temperature of any pure solvent when any non volatile solute is added to the solvent to make solution. This is expressed as

$∆ T_{f} = K_{f} x m$

$∆ T_{f} = C h a n g e i n f r e e z i n g t e m p e r a t u r e K_{f} = f r e e z i n g p o i n t d e p r e s s i o n c o n s \tan t m = m o l a l i t y o f t h e s o l u t i o n$

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