Trả lời:
a, PTHH:
Fe + HCl → FeCl2 + H2↑
FeCl2 + Cl2 → FeCl3
FeCl3 + 3 NaOH → Fe(OH)3↓ + 3 NaCl
Fe(OH)3 \(\underrightarrow{t^o}\) Fe2O3 + H2O
Fe2O3 + CO \(\underrightarrow{t^o}\) Fe + CO2↑
CO2 + NaOH → Na2CO3 + H2O
Na2CO3 + BaCl2 → NaCl + BaCO3↓
NaCl + AgNO3 → AgCl↓ + NaNO3
a)Fe+2HCl→FeCl2+H2
2FeCl2+Cl2→2FeCl3
Fe+FeCl3→2FeCl2
FeCl3+3NaOH→Fe(OH)3+3NaCl
2Fe(OH)3→toFe2O3+3H2O
Fe2O3+3CO→2Fe+3CO2
CO2+2NaOH→Na2CO3+H2O
Na2CO3+BaCl2→BaCO3↓+2NaCl
NaCl+AgNO3→AgCl↓+NaNO3
b)FeS+2HCl→FeCl2+H2S
H2S+Cu(OH)2→CuS+2H2O
2CuS+3O2→2CuO+2SO2
SO2+2Mg→2MgO+S
S+O2→SO2
b, PTHH:
FeS + HCl → FeCl2 + H2S↑
H2S + CuO → CuS↓ + H2O
CuS + O2 \(\underrightarrow{t^o}\) CuO↓ + SO2↑
SO2 + 2 H2S → 3 S↓ + 2 H2O
S + O2 \(\underrightarrow{t^o}\) SO2↑
Học tốt nhé bạn!
phần a cho mình bổ sung nhé:
FeCl3 + Cu → FeCl2 + CuCl2
a, Fe+Cl2 → FeCl2
2FeCl2 +Cl2 ----->2FeCl3
2FeCl3+Fe---.3FeCl2
FeCl3+3NaOH→ Fe(OH)3+3NaCl
2Fe(OH)3→ Fe2O3 +3H2O
Fe2O3+3CO→3CO2+2Fe
CO2+Na2O→ Na2CO3
Na2CO3+HCl→ NaCl +H2O+CO2
NaCl+ HNO3→ NaNO3+HCl
b, FeS +2HCl→ H2S +FeCl2
H2S+CuO→ CuS+H2O
CuS+O2→ SO2 + CuO
SO2+ H2S---->S+2H2O
S+O2-->SO2
