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Which Substance Is Serving as the Oxidizing Agent in the Following

Question 68

Multiple Choice

Which substance is serving as the oxidizing agent in the following reaction?
14H⁺ + Cr₂O₇^-2 + 3 Ni $\rightarrow$ 3 Ni²⁺ + 2 Cr⁺³ + 7 H₂O

A) Ni
B) H⁺
C) Cr₂O₇^-2
D) H₂O

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