Mm CH4 = 16 g / mol C2H6 = 30 g / mol
1.
Calcular moles n = m / Mm
nCH4 = 4 g / 16 g / mol = 0.
25 mol
n C2H6 = 6 g / 30 g / mol = 0.
2 mol
n totales = nCH4 + n C2H6
n totales = 0.
25 mol + 0.
2 mol = 0.
45 mol
2.
Aplicar la Ley de los gases ideales V x P = n x R x T
V = 21.
75 LP = 0.
5 atmn = 0.
45 molesR = 0.
0821 (L atm / mol K)
T = (21.
75 L x 0.
5 atm) / (0.
0821 L atm / mol K) x 0.
45 mol )
T = 294.
34 K
b) presión parcial de cada gas
para el CH4
P CH4 = 0.
5 atm x ( 0.
25 mol / 0.
45 mol)
P CH4 = 0.
278 atm.
P C2H6 = 0.
5 atm x ( 0.
2 mol / 0.
45 mol)
PC2H6 = 0.
222 atm.