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Experiment to Verify the Boyle/Mariotte
Law
| 1.
Preparation: |
a) |
Learn the
law. |
|
b) |
See below. |
| 2. |
The diagram below
represents a piece of apparatus specially made for this
experiment. |
|
DO
NOT OPEN THE TAP AT ANY TIME !
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|
 |
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The pressure of the gas (in
cmHg) = atmospheric pressure + h
Unless you have a barometer, assume that
atmospheric pressure = 76 cmHg. |
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The volume of the gas can not
easily be measured but you can assume that the tube containing
the gas is of uniform cross-section. Therefore, readings
of h and
 can be used to verify the law.
Changes of pressure and volume should be made slowly. Why? |
| 3. |
To verify the law, a graph will be plotted. The
graph must be a straight line passing through the origin. Before
starting the experiment, decide what quantities will be plotted
on the graph. |
| |
Hyperlink to an Alternative Method for
this Experiment |
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The
Open Door Web Site