Boyles Law Chemistry Lab Report

Boyle’s Law Online LabPurpose: Record Pressure and Volume data of gases in an online virtual closed syringe system to
determine relationship between gas Pressure and Volume.
Introduction: Inside a container, gas particles exert pressure by colliding with the container walls.
Frequency of collisions is directly proportional to Pressure.
Parameters that impact Pressure or frequency of collisions:
1. Moles of gas (n)
2. Temperature of gas (T)
3. Volume of gas (V)
The moles of gas directly impacts number of gas particles that collide with the container wall. More
particles, more collisions. Temperature impacts velocity of gas particles. Higher temperatures results to
faster particles and more frequency collisions with the container wall.
Volume of the container will also impact the pressure. Smaller the container (V ↓) leads to a shorter
distance the gas particles must travel to collide with walls. Thus a smaller container (V ↓) results in
more collisions (P ↑) and a larger container (V ↑) results in fewer collisions (P ↓).
According to Boyle’s Law, Pressure of gas varies inversely with the volume of the gas at constant
temperature and constant moles. The mathematical expression of Boyle’s law is written as P x V = a
constant number in a closed system. In this experiment the temperature of the gas and the quantity
(moles) of gas in the syringe (system) are constant.
Materials:
1. Computer with internet access and Chrome browser
2. Online Virtual Simulation of a Gas Law Apparatus
(https://pages.uoregon.edu/tgreenbo/boyles_law.html)
3. Microsoft Excel (available on LATTC student portal)
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Procedure:
1. Using Chrome browser, go to: https://pages.uoregon.edu/tgreenbo/boyles_law.html
2. Enable Adobe Flash Player
2.1 If needed, follow instructions on ruffle.rs
Figure 1. Picture of Virtual Simulation of a Gas Law Apparatus.
https://pages.uoregon.edu/tgreenbo/boyles_law.html
Table
3. Left click and hold mouse button to Drag the “Plunger” approximately 8 mL and then Unclick the
mouse button to release the Plunger. This will compress the gas in the syringe and move the
pressure gauge. Gas pressure readings will automatically be listed on the table. Right click mouse
on table and select “Zoom In” or “Zoom Out” to view table.
4. Drag and release the Plunger at six different volumes between 8-30mL.
5. Record Volume and Pressure readings in a Microsoft Excel spreadsheet.
6. Data Analyses
6.1 Record Pressure, Volume and 1/Volume values in an Excel Table.
6.2. For each gas, Graph/Plot in Excel:
P vs V
P vs 1/V
NOTE: graphing example: https://www.youtube.com/watch?v=03BYkUcie_c
7. Report
7.1 Submit Microsoft Word or Google Sheets (file) containing
tables and plots. (hint: copy and paste plots into Word or Sheets)
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Acknowledgement
Special thanks to the University of Oregon Chemistry Department for the use of the Boyles Law Virtual
Simulation device. https://chemdemos.uoregon.edu/
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