Write the reaction equations: iron chloride 2 – iron nitrate 2 – iron hydroxide 2 – iron oxide 2 – iron sulfate

Write the reaction equations: iron chloride 2 – iron nitrate 2 – iron hydroxide 2 – iron oxide 2 – iron sulfate 2 aluminum – aluminum chloride – aluminum hydroxide – aluminum sulfate – aluminum nitrate

A) 1) 2Al + 6HCl → 2AlCl3 + 3H2 ↑ (substitution reaction);

2) AlCl3 + 3NaOH → 3NaCl + Al (OH) 3 ↓ (exchange reaction);

3) 2Al (OH) 3 ↓ + 3H2SO4 → Al2 (SO4) 3 + 6H2O (exchange reaction);

4) Al2 (SO4) 3 + 6HNO3 → 2Al (NO3) 3 + 3H2SO4 (exchange reaction).

B) 1) FeCl2 + 2AgNO3 → Fe (NO3) 2 + 2AgCl ↓ (exchange reaction);

2) Fe (NO3) 2 + 2КOH → Fe (OH) 2 ↓ + 2KNO3 (exchange reaction);

3) Fe (OH) 2 ↓ → FeO + H2O (decomposition reaction);

4) FeO + H2SO4 → FeSO4 + H2O (exchange reaction).