The Aluminum-Air Battery Is Being Considered for Use in Automobiles

question 5

Multiple Choice

The aluminum-air battery is being considered for use in automobiles.In this battery,aluminum metal undergoes oxidation to Al³⁺ ions and forms Al(OH) ₃.O₂ from the air undergoes reduction to OH¯ ions.Which half-reaction occurs at the anode?

• A)formation of OH¯ ions from O₂.
• B)capturing O₂ from the air so that it may form the OH¯ ions.
• C)formation of Al³⁺ ions from aluminum.
• D)reaction of Al³⁺ ions with hydroxide ions to produce Al(OH)₃.

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