What Is the Total Number of Moles (N) of Electrons $\rarr$

question 42

Multiple Choice

What is the total number of moles (n) of electrons exchanged between the oxidizing agent and the reducing agent in the overall redox equation: Cr₂O₇^2-(aq) + 6Fe²⁺(aq) + 14H⁺(aq) $\rarr$ 2Cr³⁺(aq) + 6Fe³⁺(aq) + 7H₂O(l)

• A) 1
• B) 2
• C) 3
• D) 6
• E) 12

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