How to Demonstrate the Cooling of Expanding Gas
Connect two insulated containers., Pressurize the first container., Evacuate the second container.
Step-by-Step Guide
-
Step 1: Connect two insulated containers.
One container will be used to house the gas before the expansion.
The second container will be empty and provide additional volume to facilitate the expansion.
Use a valved hose or pipe to connect these containers., Check the valve between the containers to confirm that it is closed.
Use a cylinder of compressed air to force air into the first container.
Pressurize the container to slightly above atmospheric pressures (e.g. approximately
1.5 atm).Use a barometer to check the pressure. , Ensure that the valve between the containers remains closed.
Use a vacuum pump to evacuate gas from the second container.
It will not be possible to remove all gas from the container, but you should make sure that the container is below atmospheric pressure (e.g.
0.1 atm).A barometer can be used to determine the negative pressure (vacuum). -
Step 2: Pressurize the first container.
-
Step 3: Evacuate the second container.
Detailed Guide
One container will be used to house the gas before the expansion.
The second container will be empty and provide additional volume to facilitate the expansion.
Use a valved hose or pipe to connect these containers., Check the valve between the containers to confirm that it is closed.
Use a cylinder of compressed air to force air into the first container.
Pressurize the container to slightly above atmospheric pressures (e.g. approximately
1.5 atm).Use a barometer to check the pressure. , Ensure that the valve between the containers remains closed.
Use a vacuum pump to evacuate gas from the second container.
It will not be possible to remove all gas from the container, but you should make sure that the container is below atmospheric pressure (e.g.
0.1 atm).A barometer can be used to determine the negative pressure (vacuum).
About the Author
Jose Cook
Professional writer focused on creating easy-to-follow organization tutorials.
Rate This Guide
How helpful was this guide? Click to rate: