PASCO TD-8565, Instruction Manual And Experiment Manual

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10
Adiabatic Gas Law Apparatus 012-05110C
Graphs and Data Tables
Now compress the gas while taking data as described in the Setup portion of your manual.
Obtain graphs and a data table for analysis.
Calculations
➀ From your graphs or data table determine the final pressure and temperature at the time the
compression was completed. By extrapolating the temperature graph, the best value of
temperature can be determined. Using equations 3 and 4 from the Theory section, calcu-
late the theoretical temperature and pressure predicted by the adiabatic gas law. Note that
pressure and temperature must be expressed in absolute units.
➁
Plot Pressure vs Volume using a consistent set of units such as Pascals and m
3
. Perform a
numerical integration to determine the work done on the gas during the adiabatic process.
Next, by integration of the adiabatic gas law, equation 5, determine the theoretical value of
work done and compare with your measured value.
Optional
Plot Log Pressure vs Log Volume and determine Gamma which equals the negative of the
slope.