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poknpol
@poknpol
July 2022
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Cr--Cr2O3--Cr2(So4)3--Cr(OH)3--Cr2O3
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RASSPUTIN
4Cr +3O2 = 2Cr2O3
Cr2O3 + 3 H2SO4 = Cr2(SO4)3+3 H2O
Cr2(SO4)3+ 3 NaOH = 2 Cr(OH)3 +3 Na2SO4
2Cr(OH)3=Cr2O3+3H2O
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Answers & Comments
Cr2O3 + 3 H2SO4 = Cr2(SO4)3+3 H2O
Cr2(SO4)3+ 3 NaOH = 2 Cr(OH)3 +3 Na2SO4
2Cr(OH)3=Cr2O3+3H2O