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Consider the following equation: Cr2O2-

Consider the following equation: Cr2O2-7(aq) + 14H+(aq) + 6e- → 2Cr3+(ag) + 7H2O(1). The oxidation number of chromium changes from

A.

-2 to + 3

B.

-2 to + 6

C.

+6 to +3

D.

+7 to + 6

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Correct answer is C

No explanation has been provided for this answer.

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