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Freezing Point Of Naphthalene - College Term Papers

Freezing Point Of Naphthalene

I. Purpose
To determine the freezing point of a known substance, naphthalene
II. Materials

ringstand gas source
test tube test tube clamps
thermometer naphthalene
Bunsen burner goggles
hose stopwatch

III. Procedure

1. Assemble the Bunsen burner, attaching one end of the hose to the
burner and the other to a gas source.
2. Assemble the ring stand so that a ring clamp is attached to the
stand holding the test tube that will be used in the experiment.
3. Fill the test tube to approximately 1/8 capacity with
naphthalene crystals.
4. Place the thermometer in the crystals so that it is surrounded
by the naphthalene powder but not touching the sides or bottom of the ...

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is now frozen to remove the thermometer. Properly dispose of
the naphthalene liquid as instructed by the teacher.

IV. Data

Time Elapsed Temperature of Naphthalene Time
Temperature

Initial (0:00) 100oC 7:00
78.5oC
0:30 97.5oC 7:15
78.3oC
1:00 93.0oC 7:30
78.3oC
1:30 89.5oC 7:45
79.0oC
2:00 86.1oC 8:00
79.0oC
2:30 84.6oC 8:15
79.0oC
2:45 82.3oC 8:30
79.0oC
3:00 81.2oC 8:45
79.0oC
3:15 81.0oC 9:00
79.0oC
3:30 80.5oC 9:15
78.5oC
3:45 80.2oC 9:30
78.1oC
4:00 80.0oC 9:45
78.0oC
4:15 79.9oC 10:00
78.0oC
4:30 79.8oC 10:15
77.5oC
4:45 79.4oC 10:30
77.0oC
5:00 79.1oC 10:45
76.5oC
5:15 79.1oC 11:00
76.0oC
5:30 79.0oC 11:15
75.2oC
5:45 78.9oC 11:30
73.8oC
6:00 78.8oC 11:45
73.0oC
6:25 78.8oC 12:00
72.1oC
6:30 78.7oC 12:15
71.1oC
6:45 78.6oC 12:30
70.3oC

V. Graph

(See following ...

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Freezing Point Of Naphthalene. (2008, June 25). Retrieved December 23, 2024, from http://www.essayworld.com/essays/Freezing-Point-Of-Naphthalene/85776

"Freezing Point Of Naphthalene." Essayworld.com. Essayworld.com, 25 Jun. 2008. Web. 23 Dec. 2024. <http://www.essayworld.com/essays/Freezing-Point-Of-Naphthalene/85776>

"Freezing Point Of Naphthalene." Essayworld.com. June 25, 2008. Accessed December 23, 2024. http://www.essayworld.com/essays/Freezing-Point-Of-Naphthalene/85776.

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PAPER DETAILS

Added: 6/25/2008 12:46:56 AM
Category: Science & Nature
Type: Premium Paper
Words: 441
Pages: 2

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