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Question
Identify the following pair of species is in its oxidized state?
Cl2/Cl−
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Solution
Cl2/Cl−
Here, each Cl gains one electron to form Cl− ion.
\[\ce{Cl2_{(g)} + 2e- ->2Cl^-_{ (aq)}}\]
Hence, Cl2/Cl– is in a reduced state.
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