Question

a+O2=b+SO2
b+C (carbon)=d (care se depune)+CO2
d+H2SO4=eSO4+H2O
e+Fe=FeS+d
NaOH+e=f (care se depune) +NaS
g+e=a+HCl
h+e=f+NHSO4
h+g=i+H2O
Substanta a are raportul masic Cu S (Cupru la sulf) =-2la 1
Substanta i contine 47,05% S , 41,17%N si 11,76%H
Repede va rog

Answer 1

ai multe greseli........

CuS+ 3/2O2---> CuO+SO2
2CuO+ C---> 2Cu↓+CO2↑
Cu + 2H2SO4----> CuSO4 +SO2↑+2H2O
CuSO4 +Fe---> FeSO4 + Cu↓
2NaOH + CuSO4--->Cu(OH)2↓+Na2SO4
H2S +CuSO4---> CuS +H2SO4
2NH4OH+CuSO4---> Cu(OH)2↓ +(NH4)2SO4
2NH4OH +H2S---> (NH4)2S +2H2O