1. Fe -> FeCl3 -> Fe(OH)3 -> Fe2O3 -> Fe
2Fe + 6HCI -> 2FeCl3 + 3H2⬆️
FeCl3 + 3NaOH -> 3NaCl + Fe(OH)3⬇️
2Fe(OH)3 -> Fe2O3 + 3H2O
Fe2O3 + 2Al -> Al2O3 + 2Fe
2. PbO -> Pb -> Pb(NO3)2 -> Pb(OH)2 -> Na2[Pb(OH)4]
PbO + H2 -> Pb + H2O
3Pb + 8HNO3 -> 3Pb(NO3)2 + 2NO⬆️ + 4H2O
Pb(NO3)2 + 2KOH -> Pb(OH)2⬇️ + 2KNO3
Pb(OH)2 + 2NaOH -> Na2[Pb(OH)4]
3. Al -> Al2(SO4)3 -> Al(OH)3 -> Al2O3 -> NaAlO2
2Al + 3CuSO4 -> Al2(SO4)3 + 3Cu
Al2(SO4)3 + 6LiOH -> 3Li2SO4 + 2Al(OH)3⬇️
2Al(OH)3 -> Al2O3 + 3H2O
Al2O3 + Na2O -> 2NaAlO2
1. 2Fe + 3Cl2 = 2FeCl3
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2Fe(OH)3 =t Fe2O3 + 3H2O
Fe2O3 + 3H2 = 2Fe + 3H2O
2. PbO + H2 = Pb + H2O
Pb + 4HNO3(конц.) = Pb(NO3)2 + 2NO2 + 2H2O
Pb(NO3)2 + 2NaOH = Pb(OH)2 + 2NaNO3
Pb(OH)2 + 2NaOH = Na2[Pb(OH)4]
3. 2Al + 3H2SO4 = Al2(SO4)3 + 3H2
Al2(SO4)3 + 6NaOH = 3Na2SO4 + 2Aa(OH)3
2Al(OH)3 =t Al2O3 + 3H2O
Al2O3 + 2NaOH = 2NaAlO2 + H2O
1. Fe -> FeCl3 -> Fe(OH)3 -> Fe2O3 -> Fe
2Fe + 6HCI -> 2FeCl3 + 3H2⬆️
FeCl3 + 3NaOH -> 3NaCl + Fe(OH)3⬇️
2Fe(OH)3 -> Fe2O3 + 3H2O
Fe2O3 + 2Al -> Al2O3 + 2Fe
2. PbO -> Pb -> Pb(NO3)2 -> Pb(OH)2 -> Na2[Pb(OH)4]
PbO + H2 -> Pb + H2O
3Pb + 8HNO3 -> 3Pb(NO3)2 + 2NO⬆️ + 4H2O
Pb(NO3)2 + 2KOH -> Pb(OH)2⬇️ + 2KNO3
Pb(OH)2 + 2NaOH -> Na2[Pb(OH)4]
3. Al -> Al2(SO4)3 -> Al(OH)3 -> Al2O3 -> NaAlO2
2Al + 3CuSO4 -> Al2(SO4)3 + 3Cu
Al2(SO4)3 + 6LiOH -> 3Li2SO4 + 2Al(OH)3⬇️
2Al(OH)3 -> Al2O3 + 3H2O
Al2O3 + Na2O -> 2NaAlO2
1. 2Fe + 3Cl2 = 2FeCl3
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
2Fe(OH)3 =t Fe2O3 + 3H2O
Fe2O3 + 3H2 = 2Fe + 3H2O
2. PbO + H2 = Pb + H2O
Pb + 4HNO3(конц.) = Pb(NO3)2 + 2NO2 + 2H2O
Pb(NO3)2 + 2NaOH = Pb(OH)2 + 2NaNO3
Pb(OH)2 + 2NaOH = Na2[Pb(OH)4]
3. 2Al + 3H2SO4 = Al2(SO4)3 + 3H2
Al2(SO4)3 + 6NaOH = 3Na2SO4 + 2Aa(OH)3
2Al(OH)3 =t Al2O3 + 3H2O
Al2O3 + 2NaOH = 2NaAlO2 + H2O