Charles's law states that the volume ( V
) of a fixed quantity of gas is directly proportional to its temperature ( T
) at a constant pressure.
V∝T
You can verify this law by plotting the graph of a gas's volume versus its temperature.
To perform this analysis, set the number of "Heavy" gas molecules to 100 using the arrows to the left and right of the textbox for "Heavy" in the menu named Particles. Once the pressure reaches the value of about 11.7 atm
, click on the "Pressure ↕
V" radio button under the menu Hold Constant, which is at the top right corner of the simulation. At the bottom of this menu, select "Width" to see the measurement for the width of the container in nm
.
Set the temperature by using the slider on the heat control below the container to add or remove heat as given in the table below.
Temperature
( K
) 200. 250. 300. 350.
Use the width reported by the measurement below the chamber.
Complete the table below with your raw data for the width of the box at each temperature
Temperature (K) | Width (nm)
200 |
250 |
300 |
350 |
Once you have collected the data, plot a graph with temperature on the x-axis and width on the y-axis. Make sure to label your axes and title your graph appropriately.
Based on the graph, you can verify if the volume of the gas is indeed directly proportional to its temperature at a constant pressure, in accordance with Charles's Law.