The freezing point of ethanol, CH,CH,OH, is -117.30°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin . A student dissolves 11.77 grams of saccharin, C,H;NOS (183.2 g/mol), in 287.1 grams of ethanol. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K (°C/m) Kf(°C/m) Water H2O 0.512 1.86 Ethanol CH3CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene C,H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C.
The freezing point of ethanol, CH,CH,OH, is -117.30°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin . A student dissolves 11.77 grams of saccharin, C,H;NOS (183.2 g/mol), in 287.1 grams of ethanol. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula K (°C/m) Kf(°C/m) Water H2O 0.512 1.86 Ethanol CH3CH,OH 1.22 1.99 Chloroform CHCI3 3.67 Benzene C,H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:The freezing point of ethanol, CH,CH,OH, is -117.30°C at 1 atmosphere. A nonvolatile, nonelectrolyte that dissolves in ethanol is saccharin .
A student dissolves 11.77 grams of saccharin, C,H&NO;S (183.2 g/mol), in 287.1 grams of ethanol. Use the table of boiling and freezing point
constants to answer the questions below.
Solvent
Formula
Kp (°C/m) Kf (°C/m)
Water
H2O
0.512
1.86
Ethanol
CH;CH2OH
1.22
1.99
Chloroform
CHCI3
3.67
Benzene
C,H6
2.53
5.12
Diethyl ether CH;CH2OCH2CH3
2.02
The molality of the solution is
m.
The freezing point of the solution is
°C.
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