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BOYLE'S LAW
Pressure and Volume Relationship for a Confined Gas

The primary objective of this experiment is to determine the relationship between the pressure and volume of a confined gas. It is assumed that temperature will be constant throughout the experiment. Pressure and volume data pairs will be collected during this experiment and then analyzed. From the data and graph, you should be able to determine what kind of mathematical relationship exists between the pressure and volume of the confined gas. Historically, this relationship was first established by Robert Boyle in 1662 and has since been known as Boyle's law.

To determine the relationship between the pressure and volume of a confined gas.

1. Follow the guidelines for lab write-ups. Your lab must be submitted handwritten or typed. It cannot be a printed version of this page. It will be graded according to the standards in the Lab Rubric.
2. Select "Air" as the gas to be tested.
3. Drag the piston as close to the 7.5 mL mark as you can get, and then release it. It will return to its original position, and the pressure (in psi, or pounds per square inch) will be recorded in the data table to the lower right. Record each of these pairs of values in your data tables on your lab paper.
4. Repeat this process for volumes of 10 mL, 12.5 mL, 15 mL, 17.5 mL, 20 mL, 22.5 mL, 25 mL, 27.5 mL, and 30.0 mL. In each case, you need not get exactly the right volume, but you must record exactly what the program records for the volume in the data table.
5. When done, repeat steps 2 - 4 for each of the other three gases: Oxygen, Hydrogen and Helium.