What is an example of an Ideal gas law practice problem?

1 Answer
Jun 13, 2014

The Ideal Gas Law is a comparison of the the Pressure, Volume and Temperature of a Gas based upon the amount either by mole value or density.

There are two basic formulas for the Ideal Gas Law

PV=nRT and PM=dRT

P = Pressure in Atmospheres
V = Volume in Liters
n = Moles of the Gas Present
R = The Ideal Gas Law Constant 0.0821atmLmolK
T = Temperature in Kelvin
M = Molar Mass of the Gas in gramsmol
d = Density of the Gas in gL

If we were given a 2.5 mole sample of H2 gas at 30 C in a 5.0 L container, we could use the ideal gas law to find the pressure.

P = ??? atm
V = 5.0 L
n = 2.5 moles
R = 0.0821atmLmolK
T = 30 C + 273 = 303 K

PV=nRT can be rearranged algebraically to P=nRTv

P=(2.5mol)(0.0821atmLmolK)(303K)5.0L

P=12.4atm

I HOPE THIS WAS HELPFUL.
SMARTERTEACHER