Giúp với :
Hoàn thành pt phản ứng sau (ghi điều kiện nếu có):
a, FeS2--- > SO2--- > SO3--- > H2SO4 --- > SO2 --- >S--- >FeS--- > H2S--- > SO2.
b, H2S--- > S--- > H2S--- > SO2--- > BaSO3--- > SO2--- > H2SO4--- > BaSO4
c, H2S--- > SO2 < --- > SO3
S--- > SO2 --- > H2SO4
H2SO4--- > SO2 --- > S
d,. FeS--- > H2S (1) --- > S --- > SO2 --- > H2SO4
(1) --- > H2SO4 --- > CuSO4 --- > CuCl2
(1) --- > SO2 --- > HBr
a, 4FeS2+11O2--- > 8SO2+2Fe2O3
2SO2+O2--- > 2SO3
SO3+H2O--- > H2SO4
2H2SO4đ+Cu--- > SO2+CuSO4+2H2O
SO2+2H2S--- >3S+2H2O
S+Fe--- >FeS
FeS+2HCl--- > H2S+FeCl2
2H2S+3O2--- > 2SO2.+2H2O
b, 2H2S+SO2--- >3S+2H2O
S+H2--- > H2S
2H2S+3O2--- > 2SO2+2H2O
SO2+BaO--- > BaSO3
BaSO3+2HCl--- > SO2+BaCl2+H2O
2SO2+O2+2H2O-- > 2H2SO4
H2SO4+Ba--- > BaSO4+H2
c, 2H2S+3O2--- > 2SO2+2H2O
2SO2+O2--- > 2SO3
S+O2--- > SO2
SO3+H2O--- > H2SO4
2H2SO4đ+Cu--- > SO2+CuSO4+2H2O
SO2+2H2S--- > S+2H2O
d,. FeS+2HCl--- > H2S+FeCl2
(1)2H2S+SO2--- > 2S+2H2O
S+O2 --- > SO2
2SO2+O2-->2SO3
(1) SO3+H2O--- > H2SO4
H2SO4+CuO--- > CuSO4+H2O
CuSO4+BaCl2--- > CuCl2+BaSO4
(1) --- > SO2 --- > HBr
