PASCO TD-8596A Ideal Gas Law Apparatus - Manual (Page 7)

Model No. TD-8596A Procedure
5 ®
4. Record the volume (V
2
), (including V
o
) of the fully compressed plunger.
5. The Ideal Gas Law states that the quantity.
Use your values to calculate the ratio
Use your values to calculate the ratio
6. Compare these two ratios. Are they about the same? Calculate the percent difference between
them.
Questions
1. When the syringe volume is suddenly cut in half, the pressure changes by more than a factor
of 2. Why does it momentarily spike above 200 kPa?
2. When the syringe volume is suddenly cut in half, both the temperature and the pressure go up.
After a short time, the temperature approaches room temperature, but the pressure approaches
some new, higher value. Why doesn't the pressure decrease back to its original value like the
temperature does?
3. When the plunger is released in the last part of the data run, what happens to the temperature?
Why?
Table 2: Varying Temperature
Volume (cc) Pressure (kPa) Temperature (K)
1
2
PV
T
-------- Constant. =
P
1
V
1
T
1
------------
P
2
V
2
T
2
------------
Percent Difference
Value #2 - Value #1
Value #1
------------------------------------------------ x 100 (%) =