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verasanek
@verasanek
July 2022
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осуществить следующие превращения Cr-Cr2O3-CrCl3-Cr(OH)3-Cr2O3-CrOHCl2-CrCl3
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Potassium
4Cr + 3O2 = 2Cr2O3
Cr2O3 + 6HCl = 2CrCl3 + 3H2O
CrCl3 + 3NaOH = Cr(OH)3 + 3NaCl
2Cr(OH)3 (t)= Cr2O3 + 3H2O
Cr2O3 + 4HCl = 2CrOHCl2 + H2O
CrOHCl2 + HCl = CrCl3 + H2O
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Answers & Comments
Cr2O3 + 6HCl = 2CrCl3 + 3H2O
CrCl3 + 3NaOH = Cr(OH)3 + 3NaCl
2Cr(OH)3 (t)= Cr2O3 + 3H2O
Cr2O3 + 4HCl = 2CrOHCl2 + H2O
CrOHCl2 + HCl = CrCl3 + H2O