Question

In this equation Cr2O72− + 6 Fe2+ + 14H+ + 6e-→ 2 Cr3+ + 6 Fe3+ + 7H2O *

A. Oxidation state of Cr is +3 of Cr2O72− and oxidation state of Cr is +4 of Cr3+.

B. Oxidation state of Cr is +4 of Cr2O72− and oxidation state of Cr is +3 of Cr3+.

C. Oxidation state of Cr is +6 of Cr2O72− and oxidation state of Cr is +3 of Cr3+.

D. Oxidation state of Cr is +3 of Cr2O72− and oxidation state of Cr is +6 of Cr3+.

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Answer 1

Explanation:

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C. Oxidation state of Cr is +6 of Cr2O72− and oxidation state of Cr is +3 of Cr3+.