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
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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Question
Explain the difference in solubility of your unknown in water compared in water compared to other solvents.
Transcribed Image Text:Distillation and Boiling Point of Unknown
C
Unknown compound assigned:
Temperature at distillation fraction A ("C):
Temperature at distillation fraction B ("C):
59
67
69
Temperature at distillation fraction C (C):
59
Temperature when unknown started to boil ("C):
Temperature when boiling of unknown is stabilized (°C):
67
Density and Solubility of Unknown
0.25
Density test: volume of unknown distillate fraction B (mL)
Density test: mass of unknown distillate fraction B (g)
Solubility test: volume of unknown distillate fraction B (mL)
0.180
1.0
Solubility test: volume of water mixed with unknown (mL)
Solubility test: Number of layers of unknown with water
2.0
Characterization of Assumed Known
Organic compound assumed to be unknown:
Temperature when known started to boil ("C):
Temperature when boiling of known is stabilized ("C):
Density test: volume of known sample (mL)
Нехane
60
66
0.25
0.180
Density test: mass of known sample (g)
Solubility test: volume of known sample (mL)
Solubility test: volume of water mixed with known sample (mL)
1.0
2.0
Solubility test: Number of layers of known with water
Transcribed Image Text:Summary of Comparing Unknown and Assumed Known
59.0 - 67.0 °C
Observed boiling point of unknown compound:
60.0- 66.0 °C
Observed boiling point of known compound, Hexane:
Density Comparison Calculations
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