The Electrochemical Reaction That Powers a Lead-Acid Storage Battery Is

question 14

Multiple Choice

The electrochemical reaction that powers a lead-acid storage battery is as follows: Pb(s) + PbO₂(s) + 4 H⁺(aq) + 2 SO₄^2-(aq) → 2 PbSO₄(s) + 2 H₂O( )
A single cell of this battery consists of a Pb electrode and a PbO₂ electrode,each submerged in sulfuric acid.Which of the following reactions occurs at the cathode during discharge?

• A) Pb(s)is reduced to PbSO₄(s).
• B) PbO₂(s)is reduced to PbSO₄(s).
• C) PbO₂(s)is oxidized to PbSO₄(s).
• D) Pb(s)is oxidized to PbSO₄(s).
• E) H⁺ is oxidized to H₂O( ).

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Definitions:

Standard Deviation

A quantification of the extent to which a group of numbers deviates from their average.

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A statistical measure of a process's ability to produce output within preset specifications and quality limits.

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