La tostación de la pirita se produce según la reacción : 4fes 2 + 11o 2 – 2fe 2 o3 + 8so 2 calcule :a?

4FeS2 + 11 O2 → 2 Fe2O3 + 8 SO2

Mm FeS2 (Pirirta) = 120 g / mol Fe2O3 = 160 g / mol

a) calcular gramos de Fe2O3 1 Kg - - - - - 1000 g

500 Kg - - - - - - x x = 500000 g FeS2

g Fe2O3 = 500000 g FeS2 x 1mol FeS2 x 2 mol Fe2O3 x 160 g x 92 g ```````````````` ````````````````` `````````` ```````` 120 g FeS2 4 mol FeS2 1 mol 100 g

g = 306.

667 g de Fe2O3

B) Aplicar Ley de los Gases Ideales

V x P = n x R x T

R = 0.

082 (L atm / mol K)

T = 20 ºC + 273 = 293 K

P = 720 mmHg / 760 = 0.

94736 atm

n = ?

Calcular moles de O2

moles O2 = 500000 g FeS2 x 1 mol FeS2 x 11 mol O2 x 92 g ````````````````` ``````````````` ```````` 120 g FeS2 4 mol FeS2 100 g

moles O2 = 10541.

66

calcular V(L) de oxígeno

V = 10541.

66 moles x 0.

082 (L atm / mol K) x 293 K ```````````````````````````````````````````````````````````````````` 0.

94736 atm

V = 267344.

69 L.