A Fuel Cell Works on the Same Principle as a Battery

question 73

Multiple Choice

A fuel cell works on the same principle as a battery but is continually fed with fuel. In one fuel cell, methanol (CH₃OH) enters on one side of the unit and air enters on the other side. Both circulate past electrodes, and a chemical reaction occurs that produces electricity, plus carbon dioxide and water as byproducts. Which balanced chemical reaction equation best represents the reaction that occurs in this fuel cell?

• A)CH₃OH CO₂ H₂O
• B)CH₃OH CH₃ OH
• C)CH₃OH CH₂ H₂O
• D)CH₃OH O₂ CO₂ H₂O
• E)2CH₃OH 3O₂ 2CO₂ 4H₂O

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