Mass of lauric acid 7.248 -2.223g Freezing point temperature of pure lauric acid 43.7°C Freezing point temperature of Mass of unknown solute lauric acid/unknown solute solution Freezing point depression, AT Molality, m Moles of unknown solute Experimental molecular weight (molar mass) of unknown solute 39.6 °C 4.1°C 1.5 mol/kg molality of Solution (M)= To KF D.761 mol Mass of Solvent 27.249 = 0.00724kg muss of solute = 2.223 g z 292.12 g/mol Freezing Point depression => (AT) = 43.7-39.6 24.1°C Freeding Point depression constant of lauric acid (KF) = 3.96m. 4.12 21.05m 3.9% mol = 1.05 mg x 0.007249 20.0076 mol molecular weight of unuown solute = muss mol 2.2 2339 = 292.12 3 /mol 0.00761 Mal dyden-
Mass of lauric acid 7.248 -2.223g Freezing point temperature of pure lauric acid 43.7°C Freezing point temperature of Mass of unknown solute lauric acid/unknown solute solution Freezing point depression, AT Molality, m Moles of unknown solute Experimental molecular weight (molar mass) of unknown solute 39.6 °C 4.1°C 1.5 mol/kg molality of Solution (M)= To KF D.761 mol Mass of Solvent 27.249 = 0.00724kg muss of solute = 2.223 g z 292.12 g/mol Freezing Point depression => (AT) = 43.7-39.6 24.1°C Freeding Point depression constant of lauric acid (KF) = 3.96m. 4.12 21.05m 3.9% mol = 1.05 mg x 0.007249 20.0076 mol molecular weight of unuown solute = muss mol 2.2 2339 = 292.12 3 /mol 0.00761 Mal dyden-
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter11: Properties Of Solutions
Section: Chapter Questions
Problem 129CP: You make 20.0 g of a sucrose (C12H22O11) and NaCl mixture and dissolve it in 1.00 kg water. The...
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Transcribed Image Text:Mass of lauric acid
7.248
Mass of unknown solute
-2.223g
Freezing point temperature of pure lauric acid 43.7°C
Freezing point temperature of
lauric acid/unknown solute solution
Freezing point depression, AT
Molality, m
Moles of unknown solute.
Experimental molecular weight (molar mass)
of unknown solute
39.6 °C
4.1°C
1.5 mol/kg
761 mol
1 20100724kg
292.12 g/mol
Mass of Solvent 27.243
of solute = 2.223 9
Muss
freezing Point depression => (AT) = 43.7-39.6 24.1°C
Freeding Point depression constant of lauric acid (KF) = 3.9°Cin.
4.12.
21.05m
molality of Solution (~) = OTC
てー
KF
mol =1.05.
molecular weight of unnown solutez
05 mx 0.0072μg 20.0074 Mol
2.2 23.39 = 292.12 3 /mol
0.00761 Mal
dyden-mcnoil
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