Viết phản ứng theo sơ đồ sau đây
a, Fe => H2 => HCl => Cl2 => Cucl2 => Cu(OH)2 => CuSO4 => K2SO4 => KNO3
b, FeS => H2S =>S => Na2S => ZnS => ZnSO4
S => SO2 => SO3 => H2SO4
c, SO2 => S => FeS => H2S => Na2S => PbS
d, FeS2 => SO2 => S => H2S => H2SO4 => HCl => Cl2 => KClO3 => O2
e, H2 => H2S => SO2 => SO3 => H2SO4 => HCl => Cl2
a,
Fe+2HCl → FeCl2+H2
H2+Cl2 → 2HCl
MnO2+4HCl → MnCl2+Cl2+2H2O
Cu+Cl2 → CuCl2
CuCl2+2KOH → Cu(OH)2+2KCl
Cu(OH)2+H2SO4 → CuSO4+2H2O
CuSO4+2KOH → K2SO4+Cu(OH)2
K2SO4+2AgNO3 → Ag2SO4+2KNO3
b,
FeS+2HCl → FeCl2+H2S
2H2S+SO2 → 3S+2H2O
2Na+S → Na2S
Na2S+ZnCl2 → ZnS+2NaCl
ZnS+H2SO4 → ZnSO4+H2S
S+O2 → SO2
2SO2+O2 ⇌ 2SO3
SO3+H2O → H2SO4
c,
SO2+2H2S → 3S+2H2O
Fe+Sto → FeS
FeS+2HCl → FeCl2+H2S
2NaOH+H2S → Na2S+2H2O
Na2S+Pb(NO3)2 → PbS+2NaNO3
d,
4FeS2+11O2 → 2Fe2O3+8SO2
SO2+2H2S → 3S+2H2O
H2+S → H2S
H2S+4Br2+4H2O → 8HBr+H2SO4
H2SO4+NaCl → NaHSO4+HCl
MnO2+4HCl → MnCl2+Cl2+2H2O
3Cl2+6KOH → 5KCl+KClO3+3H2O
2KClO3 → 2KCl+3O2
e,
H2+S → H2S
2H2S+3O2 → 2H2O+2SO2
SO2+O2 → SO3
SO3+H2O → H2SO4
2NaCl+H2SO4 → Na2SO4+2HCl
2HCl → Cl2+H2
