What you need to know
- Plug the Gas Pressure Sensor into the computer interface
- With the syringe disconnected, move the piston until the 10 mL mark
- Attach the syringe to the valve of the Gas Pressure Sensor
2. Open the file "06 Boyle's Law" from the chemistry with computers folder of Logger Pro
3. Correct volume readings from the syringe
- To account for the extra volume, add 0.8 mL to your syringe readings
4. Click "Collect"
5. Collect the pressure vs. volume data
- Move the piston to the 5.0 mL line on the syringe. Hold firmly until stable
- When pressure is stable, click "Keep". Type in the total gas volume (5.8 mL) in the edit box
- Move piston to the 7.0 mL line. when pressure is stable, click "Keep". Type in 7.8 for total volume
- Continue this procedure for all volumes
- Click "Stop when finished
6. Record data displayed in the table
7. Examine graph, decide what kind of relationship exists between pressure and volume (direct or inverse).
- Click the Curve Fit button
- Choose variable power (y=Ax^n) from the list. Enter the power value ,n, in the power edit box. 1 if direct, -1 if inverse. Click "try fit"
- A best fit curve will be displayed on the graph. If you made the correct choice, the curve should match up with the points.
8. Print a copy of the graph
9. Proceed directly to the processing the Data section