(d) The л/A behaviour for stearic acid (solid line) and oleic acid (dotted line) are shown below. Account clearly for the difference in behaviour for the two surface active materials. 60 50 40 Surface pressure 30 (mN/m) 20 10 0 0.1 0.2 0.3 0.4 area per molecule (nm²) 0.5 0.6 [7 marks]

(d) The л/A behaviour for stearic acid (solid line) and oleic acid (dotted line) are shown below. Account clearly for the difference in behaviour for the two surface active materials. 60 50 40 Surface pressure 30 (mN/m) 20 10 0 0.1 0.2 0.3 0.4 area per molecule (nm²) 0.5 0.6 [7 marks]

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

(d) The л/A behaviour for stearic acid (solid line) and oleic acid (dotted line) are shown
below. Account clearly for the difference in behaviour for the two surface active
materials.
60
50
40
Surface
pressure 30
(mN/m)
20
10
0
0.1
0.2
0.3
0.4
area per molecule (nm²)
0.5
0.6
[7 marks]

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