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General Chemistry

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Identifying Species Oxidized in Cobalt-Cadmium Battery

CHEM-DHZZZI

Consider the reaction for the discharge of the cobalt-cadmium battery below.

$$2\textrm{Co(OH)}_3 +\textrm{Cd} \rightarrow 2\textrm{Co(OH)}_2 + \textrm{Cd(OH)}_2$$

Which species is oxidized during the discharge of the battery?

A

$\textrm{Co}^{3+}$

B

$\textrm{Co}^{2+}$

C

$\textrm{Cd} $

D

$\textrm{Cd}^{2+}$