2.3 the ideal gas equation Flashcards
1
Q
The mole - ideal gas equation. The number of moles in a specific volume of a gas.
A
pV = nRT
p = pressure (Pa)
V = volume (m3)
n = number of moles (mol)
R = gas constant (given in exam)
T = temperature (K)
2
Q
(Example) Calculate the volume in cm3 of 0.36 moles of a gas at 100kPa and 298K.
A
pV = nRT rearrange to give V = nRT / p
100kPa to 100,000 Pa
V = 0.36 x 8.31 x 298 / 100000
V = 8.91x10-3 m3
V = 8.91x10-3 x 1,000,000 = 8910cm3
3
Q
Standard conditions of temperature and pressure.
A
298K and 100kPa.