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Me so3. Cr2o72- → cr3+.. Cr2+ cr2o72-. Cr2o 2 – 7 + 14 h + + 6 e – = 2 CR 3+ + 7 h2o. K2cr04 cr3+.
Cr2o72- → cr3+.. Cr2+ cr2o72-. Cr2o 2 – 7 + 14 h + + 6 e – = 2 CR 3+ + 7 h2o. K2cr04 cr3+.

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