For a Galvanic Cell That Uses the Following Two Half-Reactions

question 90

Multiple Choice

For a galvanic cell that uses the following two half-reactions, Cr₂O₇^2-(aq) + 14 H⁺(aq) + 6 e^- → 2 Cr³⁺(aq) + 7 H₂O(l)
Sn(s) → Sn²⁺(aq) + 2 e^-
How many moles of Sn(s) are oxidized by four moles of Cr₂O₇^2-?

• A) 4
• B) 8
• C) 12
• D) 24

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