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Определите реакции, демонстрирующие восстановительные и окислительные
свойства оксида хрома (III):
A. Cr2O3 + 6HCl → 2CrCl3 + 3H2O
B. Cr2O3 + 2Al → Al2O3 + 3Cr
C. Cr2O3 + KClO3 + 2K2CO3 → 2K2CrO4 + KCl + 2CO2
D. Cr2O3 + 2KOH → 2KCrO2 + H2O
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