Ответ:
Cr₂O₃ + 6HCl → 2CrCl₃ + 3H₂O
Cr₂O₃ + 6H⁺ + 6Cl⁻ → 2Cr³⁺ + 6Cl⁻ + 3H₂O
Cr₂O₃ + 6H⁺ → 2Cr³⁺ + 3H₂O
Cr₂O₃ + 2KOH →t°→ 2KCrO₂ + H₂O
Cr₂O₃ + 2K⁺ + 2OH⁻ → 2K⁺ + 2CrO₂⁻ + H₂O
Cr₂O₃ + 2OH⁻ → 2CrO₂⁻ + H₂O
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Ответ:
Cr₂O₃ + 6HCl → 2CrCl₃ + 3H₂O
Cr₂O₃ + 6H⁺ + 6Cl⁻ → 2Cr³⁺ + 6Cl⁻ + 3H₂O
Cr₂O₃ + 6H⁺ → 2Cr³⁺ + 3H₂O
Cr₂O₃ + 2KOH →t°→ 2KCrO₂ + H₂O
Cr₂O₃ + 2K⁺ + 2OH⁻ → 2K⁺ + 2CrO₂⁻ + H₂O
Cr₂O₃ + 2OH⁻ → 2CrO₂⁻ + H₂O