Ideal+Gas+Law

The ideal gas law is PV=nRT. where P is pressure, V is volume, n is number of moles, R is the gas constant (0.08206), and T is temperature. It is used to show the relationship between these variable and the behavior of a gas.


 * Objective** The purpose of this lab is to verify the ideal gas law. If one variable is affected, another is as a result because the equation must be held constant for each gas. By changing the pressure, it can be seen that the volume increases or decreases accordingly in order to keep the equation constant.

Here is the link for the online simulation... http://www.chem.ufl.edu/~itl/2045/MH_sims/gas_sim.html


 * Data Collection** Choose a gas, either argon or helium, and click volume under the graph pressure vs. column. This means that the temperature, number of moles, and gas constant will stay at a constant. Choose a value for the pressure. Using the ideal gas law, calculate what the volume will be. Verify this number with what the simulation shows. Repeat two more times.


 * Graphical Analysis** The graph in the upper right hand corner will graph your values on a pressure vs. volume graph. Verify that pressure times volume is constant for all three of the data points you collected on the graph.

1. What happens to volume as pressure increases? Explain why this happens using the ideal gas law equation. 2. What must be the volume of 1 mol of helium at 20atm at 300 K? 3. If pressure was doubled, what would be the coefficient for the volume in order for the equation to remain equal?
 * Analysis Questions**

There will be no percent error because all of the calculations are based off of the ideal gas law and simulation.
 * Percent Difference/Error**

Lab Report:

Video Tutorial: http://screencast.com/t/y5WqE1v4h