Write the equations for the transition reactions: a) chromium (III) sulfate to potassium dichromate
| December 30, 2020 | education
Write the equations for the transition reactions: a) chromium (III) sulfate to potassium dichromate b) potassium chromate to chromium chloride c) potassium dichromate to potassium chromate d) potassium dichromate to potassium chromite.
1) Cr2 (SO4) 3 + 7H2O + 3K2S2O6 (O2) = K2Cr2O7 + 4KHSO4 + 5H2SO4
2) 2K2CrO4 + 16HCl (conc., 90c) = 2CrCl3 + 3Cl2 + 4KCl + 8H2O
3) K2Cr2O7 + 2KOH (conc.) = 2K2CrO4 + H2O
4) K2Cr2O7 + 6KOH + 3SO2 (t) = 2K2CrO2 + 3K2SO4 + 3H2O
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