Question

Везде расставить степени окисления FeSO4+2NaOH -> Fe(OH)2+H2SO4
Fe(OH)2+2Hcl -> FeCl2+2H2O
Fe2(SO4)3+KOH -> K2SO4 + Fe(OH)3
Fe(OH)3+3HCl -> FeCl3+3H2O

Answer 1

FeSO₄+2NaOH = Fe(OH)₂↓+H₂SO₄

Fe⁺²S⁺⁶O₄⁻²+2Na⁺O⁻²H⁺ = Fe⁺²(O⁻²H⁺)₂↓+H₂⁺S⁺⁶O₄⁻²

Fe(OH)₂+2HCI = FeCl₂+2H₂O

Fe⁺²(O⁻²H⁺)₂+2H⁺CI⁻ = Fe⁺²Cl₂⁻+2H₂⁺O⁻²

Fe₂(SO₄)₃+6KOH = 3K₂SO₄ +2 Fe(OH)₃↓

Fe₂⁺³(S⁺⁶O₄⁻²)₃+6K⁺O⁻²H⁺ = 3K₂⁺S⁺⁶O₄⁻² + 2Fe⁺³(O⁻²H⁺)₃↓

Fe(OH)₃+3HCl = FeCl₃+3H₂O

Fe⁺³(O⁻²H⁺)₃+3H⁺Cl⁻ = Fe⁺³Cl₃⁻+3H₂⁺O⁻²