Ce cantitate de dioxid de sulf se obține prin prăjirea a 120 tone de pirită (FeS2)? Exprimați răspunsul in kilograme.
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Răspuns:
Explicație:
120 t = 120000kg pirita
kg, kmoli SO2
120000kg xkg
4FeS2 +11 O2=2 Fe2O3 +8 SO2
4.120kg 8.64kg
x= 120000 . 8 . 64 : 4 . 120 =128000 kg SO2
n= 128000kg : 64gk/kmoli = 2000 kmoli SO2
MFeS2= 56 + 2.32= 120-------> 120kg/kmoli
MSO2= 32 + 2.16=64-------> 64kg/kmoli