Gay-Lussac’s Law: Pressure and Temperature
Relationship for a Contained Sample of Gas Lab
Data Analysis Sheet
Use the data below to determine the relationship between pressure and temperature.
Temp
(oC)
cold 0.0
cool 11.5
room 22.1
warm 45.6
hot
100.0
Pressure
(kPa)
95.6
99.1
102.6
110.2
131.1
Data Analysis:
1) Write the formula of the line in y=mx+b form from the information on the graph.
2) Use your equation to solve for the temperature (x) when the pressure (y) is zero.
Conclusion
3) What is true about kinetic energy if there is no pressure?
What is this condition called?
4) The Kelvin Scale is used to study gases because it is an ABSOLUTE scale.
What does this mean? What is the temperature in oC at absolute zero?
5) If the temperature is halved from 300 K to 150 K what happens to pressure?
6) If the temperature is tripled from 100 K to 300 K what happens to pressure?
7) Is the relationship between pressure and temperature direct (one increases, the
other increases proportionally) or inverse (one increases, the other deceases
proportionally)? Explain your answer.
8) Use the data above to confirm the direct mathematical relationship between
pressure and temperature.
a. Convert each oC temperature into Kelvin
b. Divide each Pressure by its Kelvin Temperature
c. Comment upon the values you calculated
Charles’s Law:
The Temperature and Volume Relationship of a Contained
Sample of Gas
Data Collection and Data Analysis Sheet
Volume
Temperature
5.00 L
183 K
7.50 L
273 K
10.00 L
365 K
12.50 L
456 K
15.00 L
548 K
17.50 L
639 K
20.00 L
730 K
Charles’ Law: Temperature vs. Volume
Conclusion:
Use your data to answer the following:
1) When the temperature is doubled from 273 K to 285 K, the volume…
2) When the temperature is halved from 730 K to 365 K, the volume…
3) When the temperature is tripled from 183 K to 548 K, the volume…
4) Is the relationship between volume and temperature direct (one increases, the
other increases proportionally) or inverse (one increases, the other deceases
proportionally)? Explain your answer.
5) Write a mathematical statement showing how temperature and volume are related.
6) Write a logical statement about Charles’ Law.
Boyle’s Law:
The Pressure and Volume Relationship of
a Contained Sample of Gas
Use a syringe and the pressure sensor to gather the pressures at the given volumes. Do
not exceed the limits of the pressure gauge, and don’t change the sample of the gas
during the data collection (don’t open the syringe entirely).
10.00 mL
5.00 mL
7.50 mL
10.00 mL
12.50 mL
15.00 mL
17.50 mL
20.00 mL
10.00 mL
Print out the graph and data table from Logger Pro and attach it in your lab book.
Conclusion:
Use your data to answer the following:
1) When the volume is doubled from 5.00 mL to 10.00 mL, what happened to the
pressure?
2) When the volume is halved from 20.00 mL to 10.00 mL, what happened to the
pressure?
3) When the volume is tripled from 5.00 mL to 15.00 mL, what happened to the
pressure?
4) Is the relationship between pressure and volume direct (one increases, the other
increases proportionally) or inverse (one increases, the other deceases
proportionally)? Explain your answer.
5) Write a mathematical statement showing how pressure and volume are related.
6) What is the purpose of returning to 10.00mL two more times in the data
collection?
7) Write a logical statement about Boyle’s Law.
Crushing a Can
Purpose: Use the atmospheric pressure and the kinetic theory of matter to have the
atmospheric pressure crush a soda can.
Procedure:
1) Make an ice bath by placing 5-10 ice cubes in 250 mL of tap water in a large beaker.
2) Place 10.0 mL of tap water into an empty, clean aluminum can.
3) Place this can on a hot plate set on “high.”
4) Allow the water in the can to boil and steam is seen leaving the can.
5) Use tongs or the hot glove to grab the middle of the can and carefully, but quickly,
invert the can and place it into the ice bath.
Labeled Diagrams and Observations:
Include arrows showing the pressure inside the can and the pressure outside the can. The
length of the arrow should relate to the strength of the pressure.
Diagram 1: the Lab Set up – clearly labeled items, pressure inside and outside the can
Diagram 2: As the Water Boils – pressure inside and pressure outside the can. Offer a
reason why Steam leaves the can.
Diagram 3: The moment the can is placed in the ice water bath = before it is crushed.
Identify the pressure inside and outside the can, and the relative temperature inside and
outside the can.
Diagram 4: the moment after the can is crushed. Identify the pressure inside and outside the
can, and the relative temperature inside and outside the can.
Conclusion:
The can was crushed by the atmospheric pressure. The atmospheric pressure never
changed during the lab. Offer your reasons for why the can was crushed once it was
placed upside down in the ice water.