Write the reaction equation: Cr- Cr2O3- Cr- CrCl3- Cr2 (So4) 3- CR (OH) 3- Cr2O3- CR (NO3) 3- CR (OH) 3- NaCrO2

univerkov | September 7, 2021 | education

1) 2Cr + 3O2 → 2Cr2O3 (chromium (III) oxide).

2) Cr2O3 + 3H2 → 2Cr + 3H2O (chromium).

3) 2Сr + 3Cl2 → 2CrCl3 (chromium (III) chloride).

4) 2CrCl3 + 3Ag2SO4 → Cr2 (SO4) 3 + 6AgCl (chromium (III) sulfate, silver chloride).

5) Cr2 (SO4) 3 + 6NaOH → 3Na2SO4 + 2Cr (OH) 3 (sodium sulfate, chromium (III) hydroxide).

6) 2Cr (OH) 3 → Cr2O3 + 3H2O (heating) (chromium (III) oxide).

7) Cr2O3 + 6HNO3 → 2Cr (NO3) 3 + 3H2O (chromium (III) nitrate).

8) Cr (NO3) 3 + 3KOH → 3KNO3 + Cr (OH) 3 (potassium nitrate, chromium (III) hydroxide).

9) Cr (OH) 3 + NaOH → NaCrO2 + 2H2O (fusion) (sodium chromite).

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