Answered: Freezing point of Lauric acid: 43.5oC…

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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4. A student obtained the following data:
Freezing point of Lauric acid: 43.5oC
Freezing point of Lauric acid containing an unknown solute: 41.2oC
The freezing point depression constant for Lauric acid: 3.9oC/molal
The molality of the unknown solute is closest to:
A. 0.6m B. 1.6m C. 1.7m D. 0.3m E. 2.3m F. 3.9m G. zero

5. Given the following data:
Flask A with 50cm2 surface area contains 100mL of water at 25oC;
Flask B with 20cm2 surface area contains 10mL of water at 55oC.
In which flask does the water have a lower vapor pressure?
A. flask A
B. flask B
C. both flasks have the same vapor pressure

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