# Applying Boyle's Gas Law

1. Does the volume of gas in the syringe change as you add weight to the top? (If you did not see any change in the volume of gas, you may need to use heavier weights. Try adding some small books, one at a time.)

2. Make a table with the volume of gas in one column and the amount of water or number of other weights in the other column.

3. What happens to the volume as the weight on the wooden block changes?

4. Challenge Exercise: Plot the volume of gas on one axis and the amount of water on the other.

5. Look at your table of data and/or your plot of the data. How does your data compare to Boyle's Law - at constant temperature the volume of a gas varies inversely with its pressure. Boyle's law has been tested numerous times and found to coincide with observations.

Think About This

What would you predict would happen if you filled the syringe with a liquid instead of a gas? What does this say about the arrangement of atoms or molecules in a gas and in a liquid?

https://brainmass.com/chemistry/boyle-s-law/boyle-gas-law-170933

#### Solution Preview

This experiment is designed to show the following relationship that works at constant temperature:

P is proportional to 1/V

This is called Boyle's law and it states that the pressure of a gas is inversely proportional to its volume. That means that as we increase the pressure, we should see a decrease in the volume. Therefore, the more weight we put on the top of the syringe, the more the plunger should be depressed, and the more the gas will be compressed, taking up less and less space or volume in the syringe.

1. Does the volume of gas in the syringe change as you add weight to the top? (If you did not see any change in the volume of gas, you may need to use heavier weights. Try adding some small books, one at a time.) ...

#### Solution Summary

This solution answers various questions the apply Boyle's gas law.