Полное и уровнение 3)cr(oh)3 + 3hcl → crcl3 + 3h2o. 4) naoh + sio2 → na2sio3 + h2o. 5) ba + 2h2o = ba(oh)2 + h2, 6) alcl3 + 3naoh = al(oh)3↓ + 3nacl, 7) fe2(so4)3 + 6naoh = 2fe(oh)3 + 3na2so4, 8) koh + 3s = k2so3 + 2k2s + 3h2o, 9) naoh + cl2 = nacl + naocl + h2o 10) ba(oh)2 + hcl = baohcl + h2o,

Объяснение:

3) Cr(OH)₃ + 3HCl = CrCl₃ + 3H₂O

Cr(OH)₃ + 3H⁺ + 3Cl⁻ = Cr³⁺ + 3Cl⁻ + 3H₂O

Cr(OH)₃ + 3H⁺ = Cr³⁺ + 3H₂O

4) 2NaOH + SiO₂ = Na₂SiO₃ + H₂O

2Na⁺ + 2OH⁻ + SiO₂ = 2Na⁺ + SiO₃²⁻ + H₂O

2OH⁻ + SiO₂ = SiO₃²⁻ + H₂O

5) Ba + 2H₂O = Ba(OH)₂ + H2

Ba + 2H₂O = Ba²⁺ + 2OH⁻ + H₂

6) AlCl₃ + 3NaOH = Al(OH)₃↓ + 3NaCl

Al³⁺ + 3Cl⁻ + 3Na⁺ + 3OH⁻ =  Al(OH)₃↓ + 3Na⁺ + 3Cl⁻

Al³⁺ + 3OH⁻ = Al(OH)₃↓

7) Fe₂(SO₄)₃ + 6NaOH = 2Fe(OH)₃↓ + 3Na₂SO₄

2Fe³⁺ + 3SO₄²⁻ + 6Na⁺ + 6OH⁻ = 2Fe(OH)₃↓ + 6Na + 3SO₄²⁻

2Fe³⁺ + 6OH⁻ = 2Fe(OH)₃↓

Fe³⁺ + 3OH⁻ = Fe(OH)₃↓

8) 6KOH + 3S = K₂SO₃ + 2K₂S + 3H₂O

6K⁺ + 6OH⁻ + 3S = 2K⁺ + SO₃²⁻ + 4K⁺ + 2S²⁻ + 3H₂O

6OH⁻ + 3S = SO₃²⁻ + 2S²⁻ + 3H₂O

9) 2NaOH + Cl₂ = NaCl + NaOCl + H₂O

2Na⁺ + 2OH⁻ + Cl₂ = Na⁺ + Cl⁻ + Na⁺ + OCl⁻ + H₂O

2OH⁻ + Cl₂ = Cl⁻ + OCl⁻ + H₂O

10) Ba(OH)₂ + HCl = BaOHCl + H₂O

Ba²⁺ + 2OH⁻ + H⁺ + Cl⁻ = BaOH⁺ + Cl⁻ + H₂O

Ba²⁺ + + 2OH⁻ + H⁺ = BaOH⁻ + H₂O