The freezing point of ethanol, CH3 CH2OH, is -117.30 °C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is testosterone. A student dissolves 12.79 grams of testosterone, C19 H28 O2 (288.4 g/mol), in 195.1 grams of ethanol. Use the table of boiling and freezing point constants to answer the questions below. Solvent Water Formula Kb (°C/m) K (°C/m) H₂Ot 0.512 1.86 Ethanol CH3 CH2OH 1.22 1.99 Chloroform CHC13 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3 CH2 OCH2 CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C.

Chemistry: Principles and Practice
3rd Edition
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Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
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Chapter12: Solutions
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Problem 12.26QE
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The freezing point of ethanol, CH3 CH2OH, is -117.30 °C at 1 atmosphere. A nonvolatile, nonelectrolyte that
dissolves in ethanol is testosterone.
A student dissolves 12.79 grams of testosterone, C19 H28 O2 (288.4 g/mol), in 195.1 grams of ethanol. Use the table
of boiling and freezing point constants to answer the questions below.
Solvent
Water
Formula
Kb (°C/m) K (°C/m)
H₂Ot
0.512
1.86
Ethanol
CH3 CH2OH
1.22
1.99
Chloroform
CHC13
3.67
Benzene
C6H6
2.53
5.12
Diethyl ether CH3 CH2 OCH2 CH3
2.02
The molality of the solution is
m.
The freezing point of the solution is
°C.
Transcribed Image Text:The freezing point of ethanol, CH3 CH2OH, is -117.30 °C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is testosterone. A student dissolves 12.79 grams of testosterone, C19 H28 O2 (288.4 g/mol), in 195.1 grams of ethanol. Use the table of boiling and freezing point constants to answer the questions below. Solvent Water Formula Kb (°C/m) K (°C/m) H₂Ot 0.512 1.86 Ethanol CH3 CH2OH 1.22 1.99 Chloroform CHC13 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3 CH2 OCH2 CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C.
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