Make up the reaction equation: 1) Cr- Cr2O3- Cr2 (SO4) 3- Cr (oh) 3- H2CrO4; 2) Cr (Oh) 3- KCrO2 – K2Cr2O7
| September 11, 2021 | education
1) 2Cr + 3KNO3 = Cr2O3 + 3KNO2
The reaction takes place at a temperature of 400-550 ° C.
2) 3K2S2O7 + Cr2O3 = Cr2 (SO4) 3 + 3K2SO4
The reaction takes place at a temperature of 400-550 ° C.
3) Cr2 (SO4) 3 + 6NaOH (dil.) = 2Cr (OH) 3 ↓ + 3Na2SO4
4) 2 Cr (OH) 3 + 3 H2O2 = 2 H2CrO4 + 4 H2O
5) Cr (OH) 3 + KOH = KCrO2 + 2H2O
6) 2KCrO2 + 3H2O = K2Cr2O7 + 3H2
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
