Suppose the Redox Reaction in a Certain Zinc-Carbon Battery Is $\rightarrow$

question 109

Multiple Choice

Suppose the redox reaction in a certain zinc-carbon battery is Zn + 2 MnO₂ +2 NH₄ Cl $\rightarrow$ MN₂ O₃ + Zn(NH₃ ) 2 CL₂ + H₂ O.The battery is rated at 0.75 W _• hr at 1.5 V.How many grams of zinc must be oxidized to deliver this much electrical energy?

• A)1.4 g Zn
• B)1.8 g Zn
• C)0.61 g Zn
• D)0.91 g Zn
• E)1.2 g Zn

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