Boyle S and Charles S Law Lab Exercise

Name:

Boyle’s and Charles’s Law Lab Exercise

Introduction – In this exercise,you will use a computer simulation to study the relationships between the volume, pressure, and temperature of a gas. We will also use the simulation to determine the value of Absolute Zero (0 K) on the Celsius scale.

On the links page of the class website, click on the Gas Laws Simulation Link

Download the Excel spreadsheet from the course page on the class website.

Boyle’s Law

Directions

1. In this simulation, you willadjust the volume while the pressure responds to that change. Don’t heat or cool the sample.

1. Record the volume and pressure in the Excel spreadsheet, (it will graph it for you).

1. Adjust the volume to a new value and record both the volume and corresponding pressure. Repeat this seven more times, make sure to use the full spectrum of volumes.

Charles’s Law

Directions

1. Reload the webpage to reset the simulation. This time you will heat or cool the sample, which will cause the volume to change.

1. Record eight measurements of Volume and Temperature on the Excel spreadsheet.Make sure to use the full spectrum of volumes.

Gay-Lussac’s Law

Directions

1. Reload the webpage to reset the simulation. Click the lock button by the volume measurement. This time you will heat or cool the sample, which will cause the pressure to change.

1. Record eight measurements of Pressure and Temperature on the Excel spreadsheet.Make sure to use the large range of temperatures.

Questions

Boyle’s Law

1. In the Boyle’s Law simulation what property must be kept constant? (Besides the amount of gas) ______

1. Based on your observations in the Boyle’s Law section, describe in your own words, what happens to the pressure of the gas as the volume changes. ______

Charles’s Law

1. In the Charles’s Law simulation, what property must be held constant? (Besides the amount of gas) ______

1. Based on your observations in the Charles’s Law section,describe in your own words, what happens to the volume of the gas as the temperature changes. ______

1. Calculate the temperature at which the volume of the gas would be zero by using the following formula:temperature = - (intercept/slope)

This represents absolute zero in oC

Gay-Lussac’s Law

1. In the Gay-Lussac’s Law simulation what property must be kept constant? (Besides the amount of gas) ______

1. Based on your observations in the Gay-Lussac’s Law section, describe in your own words, what happens to the pressure of the gas as the temperature changes. ______