Question

Cr = CrCl3 = Cr(OH)3 = Cr2O3 = Cr2(SO4)3
Помогите с цепочкой пожалуйста

Answer 1

2Cr + 3Cl₃ = 2CrCl₃
CrCl₃ + 3KOH = Cr(OH)₃ + 3KCl
2Cr(OH)₃ = Cr₂O₃ + 3H₂O
Cr₂O₃ + 3H₂SO₄ + Cr₂(SO₄)₃ + 3H₂O