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Question
Identify the redox reactions out of the following reactions and identify the oxidising and reducing agents in them.
\[\ce{HgCl2 (aq) + 2KI (aq) -> HgI2 (s) + 2KCl (aq)}\]
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Solution
\[\ce{\overset{+2}{Hg}\overset{-1}{Cl2} (aq) + 2\overset{+1}{K}\overset{-1}{I} (aq) -> \overset{+2}{Hg}\overset{-1}{I2} (s) + 2\overset{+1}{K}\overset{-1}{Cl} (aq)}\]
Here O.N. of none of the atoms undergo a change and therefore, this is not a redox reaction.
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