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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Transcribed Image Text:Determination of the Surface Tension of a Liquid by the Capillary Rise Method: A
group of students enrolled in a Physical Chemistry Laboratory class performed
an experiment on the determination of the surface tension of a liquid by the
capillary rise method. The data gathered by the group are documented in the
tables below. Solve for the unknown data for #s 1-12.
Compounds Average Height, dm Density (e/ml)
Water
0.16
0.9998
Benzene
0.08
0.7882
Chloroform
0.03
1.4592
Methanol
0.07
0.8707
Compounds
Theoretical Value of Surface
Calculated Surface Tension at
20°C, dyne/cm
(Water as Calibrating Liquid)
% Error
Tension at 20°C, dyne/cm
Water
72.86
Benzene
28.88
Chloroform
27.5
Methanol
22.7
Calculated Surface Tension at
20°C, dyne/cm
(Benzene as Calibrating Liquid)
X Error
Theoretical Value of Surface
Tension at 20°C, dyne/cmn
Compounds
Water
72.86
10
28.88
27.5
22.7
Benzene
11
Chloroform
12
Methanol
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