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

question 14

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)
Pb(s) → Pb²⁺(aq) + 2 e^-
How many moles of Pb(s) are oxidized by three moles of Cr₂O₇^2-(aq) ?

• A)3
• B)6
• C)9
• D)18

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