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2FexOy + (6x-2y)H2SO4 -> xFe2(SO4)3 + (3x-2y)SO2 + (6x-2y)H2O
a) CuSO4+Fe→FeSO4+Cu
b) ZnSO4+ 2NaOH→Na2SO4+ Zn(OH)2
c) HCl+AgNO3→AgCl+HNO3
d) BaSO3→ BaO+SO2
e)Na2CO3+Ca(NO3)2→ 2NaNO3+ CaCO3
a) 4Al+3O2--->2Al2O3
Al2O3+6HCl--->2AlCl3+3H2O
2AlCl3+ 3H2SO4--->Al2(SO4)3+6HCl
Al2(SO4)3+6NaOH----> 2Al(OH)3+3Na2SO4
b) FeCl2+2 NaOH--->Fe(OH)2+2NaCl
Fe(OH)2---->FeO+H2O
FeO+H2-->Fe+H2O
Fe+Cl2---->FeCl2
2FeCl2+Cl2--->2FeCl3
FeCl3+3NaOH--->Fe(OH)3+3NaOH
2Fe(OH)3---->Fe2O3+3H2O
Fe2(SO4)3+3HNO3---->Fe(NO3)3+3H2SO4
Fe2O3+6HCl--->2FeCl3+3H2O
FeCl3+3HNO3---->Fe(NO3)3+3HCl
Fe(NO3)3+ 3NaOH--->Fe(OH)3+3NaNO3
2Fe(OH)3+ 3H2SO4---->Fe2(SO4)3+6H2O
Fe2(SO4)3+3 BaCl2----->2FeCl3+3BaSO4
\(1.\text{Fe2O3 + 6HCl → 3H2O + 2FeCl3}\)
\(2.\text{3AgNO3 + FeCl3 → 3AgCl + Fe(NO3)3}\)
\(3.\text{ 3Ba(OH)2 + 2Fe(NO3)3 → 3Ba(NO3)2 + 2Fe(OH)3 (kt) }\)
\(4.\text{3H2SO4 + 2Fe(OH)3 → Fe2(SO4)3 + 6H2O}\)
\(5.\text{3BaCl2 + Fe2(SO4)3 → 2FeCl3 + 3BaSO4}\)
\(a,\\ \left(1\right)Fe+Cu\left(NO_3\right)_2\rightarrow Fe\left(NO_3\right)_2+Cu\\ \left(2\right)Fe\left(NO_3\right)_2+2KOH\rightarrow Fe\left(OH\right)_2\downarrow+2KNO_3\\ \left(3\right)Fe\left(OH\right)_2+2HCl\rightarrow FeCl_2+2H_2O\)
\(\left(4\right)FeCl_2\) \(\rightarrow\left(đpdd\right)\) \(Fe+Cl_2\)
\(b,\\ \left(1\right)2Fe+3Cl_2\rightarrow\left(t^o\right)2FeCl_3\\ \left(2\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\downarrow\\ \left(3\right)Fe\left(NO_3\right)_3+3KOH\rightarrow Fe\left(OH\right)_3+3KNO_3\\ \left(4\right)2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
\(8FeO+26HNO_3\rightarrow8Fe\left(NO_3\right)_3+N_2O\uparrow+13H_2O\)
Các PT xảy ra là:
\(3Fe\left(OH\right)_3+2H_2SO_4\)→\(Fe_2\left(SO_4\right)_3+6H_2O\)
\(SiO_2+2H_2SO_4\)→\(Si\left(SO_4\right)_2+2H_2O\)
\(MgO+H_2SO_4\)→\(MgSO_4+H_2O\)
\(Ca\left(PO_4\right)_2+H_2SO_4\)→\(CaSO_4+2HPO_4\)
\(BaCO_3+H_2SO_{4_{ }}\)→\(BaSO_4+SO_2+H_2O\)
3Fe + 2O2 ➝ Fe3O4
Fe3O4 + 8HCl ➝ FeCl2 + 2FeCl3 + 4H2O
2FeCl2 + Cl2 ➝ 2FeCl3
FeCl3 + 3AgNO3 ➝ Fe(NO3)3 + 3AgCl↓
Fe(NO3)3 + 3NaOH ➝Fe(OH)3 + 3NaNO3
2Fe(OH)3 \(\underrightarrow{t^o}\) Fe2O3 + 3H2O
N ở đâu ra zậy
ko biết đề cô nó cho thế nên ms phải hỏi