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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At about what temperature does the sample change phase? Justify your Answer based on the cooling curve shown above.
Transcribed Image Text:1. In an experiment, a closed container holds a 10.0 g sample of an alcohol. The
container is cooled at a constant rate. The sample's temperature is recorded each
minute. A graph of the data is below. A phase diagram for the alcohol is also
shown.
COOLING CURVE FOR AN
PHASE DIAGRAM OF AN ALCOHOL
ALCOHOL
y
62
500
liquid
solid
400
1.00
300
200
4.2 x 10-9
100
gas
0-
10
15
Time (min)
150 159
351 514
Temperature (K) (not to scale)
Temperature (K)
20
Pressure (atm) (not to scale)
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