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Discussion for Gas Law Experiment

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Chemistry 1061: Principles of Chemistry I Gas Laws
Gas Laws: Pressure, Volume, and Temperature
Introduction
Pressure, volume, and temperature are properties of gases that reveal their relationships when any one of them is varied. Changing the temperature of a gas may change its volume or pressure, but how? What are the mathematical relationships between these properties? Are there limits to them? Scientists have discovered through the study of properties of gases that there is indeed a theoretical limit to temperature, called absolute zero. Studying the relationships between the properties of gases enables one to predict their values under given conditions.
Learner Outcomes
Upon completion of this laboratory activity, the student should be …show more content…

7. Copy and paste the data into Sheet 1 of an Excel spreadsheet. Save using the following convention for naming your files: “Lastname Firstname Gases” (include both names if you are working in pairs), saving to the H: drive and/or your own flash drive.
8. It turns out that the volume reading on the syringe is not equal to the volume of the gas, since some gas occupies the space inside the tubing and inside the pressure sensor. To correct for this, add a new column to your spreadsheet between the existing volume and pressure columns, called corrected volume. In this column, add 0.5 mL to each of your syringe readings if your sensor was a “Gas Pressure Sensor” and 2.3 mL to each of your readings if your sensor was a “Pressure Sensor”. To abbreviate, use Vs for syringe readings, V for the corrected volumes, and P for the pressure.
9. Use the curve-fitting techniques you learned in Spreadsheet Lab II to determine a mathematical relationship between pressure (P) and corrected volume (V). Assign pressure to the y-axis. Then plot P vs. each V, V2, 1/ V, 1/ V2, log V, and 10V. Use the trendline analysis to determine a mathematical equation for the relation. On the plot of P vs. 1/V and P vs.
1/V2, the y-intercept should be set to zero. Why? Try it and see what happens.
10. Keep only your best-fit linear plot, showing the mathematical equation and your experimental data. Does your data show that pressure and volume are directly proportional,

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