Question

Ребят,помогите пожалуйста.
→ FeCl3 → Fe(OH)3 → Fe2O3 → Fe → FeCl2 → Fe(OH)2 → FeO → Fe;

Na → Na2O2 → Na2O → NaOH → Na2CO3 → NaHCO3 → NaNO3 → NaNО2;

Si → SiO2 → Na2SiO3 → H2SiO3 → SiO2 → Si → Mg2Si → SiH4.

Answer 1

FeCl₃ + 3NaOH = Fe(OH)₃ + 3NaCl
2Fe(OH)₂ = Fe₂O₃ + H₂O
Fe₂O₃ + 3H₂ = 2Fe + 3H₂O
Fe + 2HCl = FeCl₂ + H₂
FeCl₂ + 2NaOH = Fe(OH)₂ + 2NaCl
Fe(OH)₂ = FeO + H₂O
FeO + H₂ = Fe + H₂O

2Na + O₂ = Na₂O₂
Na₂O₂ + 2Na = 2Na₂O
Na₂O + H₂O = 2NaOH
2NaOH + H₂CO₃ = Na₂CO₃ + 2H₂O
Na₂CO₃ + CO₂ + H₂O = 2NaHCO₃
NaHCO₃ + HNO₃ = NaNO₃ + CO₂ + H₂O
2NaNO₃ = 2NaNO₂ + O₂

Si + O₂ = SiO₂
SiO₂ + 2NaOH = Na₂SiO₃ + H₂O
Na₂SiO₃ + 2HCl = 2NaCl + H₂SiO₃
H₂SiO₃ = SiO₂ + H₂O
SiO₂ + 2Mg = Si + 2MgO
Si + 4Mg = Mg₂Si + 2MgO
Mg₂Si + 4H₂O = 2Mg(OH)₂ + SiH₄