Exercise 5 | Properties of Gases
General Chemistry 2 - Exercise 5
Calculate the density (in g.L-1) of the methane CH4 (g) at 10.0°C and 1.00 atm.
ρ = m / V
Ideal-gas equation:
PV = nRT
⇒ PV =
⇒ =
⇒ ρ =
P = pressure in Pa ⇒ 1.00 atm = 1.013 x 105 Pa
M = molar mass ⇒ M = MC + 4 x MH = 16.4 g.mol-1
R = ideal gas constant = 8.314 m3.Pa.K-1.mol-1
T = temperature in K ⇒ 10.0°C = 288 K
ρ = = 6.94 x 102 g.m-3 = 6.94 x 10-1 g.L-1