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Question
Identify the redox reactions out of the following reactions and identify the oxidising and reducing agents in them.
\[\ce{PCl3 (l) + 3H2O (l) -> 3HCl (aq) + H3PO3 (aq)}\]
Solution
\[\ce{\overset{+3}{P}\overset{-1}{Cl3} (l) + 3\overset{+1}{H2}\overset{-2}{O} (l) -> \overset{+1}{3H}\overset{-1}{Cl} (aq) + \overset{+1}{H3}\overset{+3}{P}\overset{-2}{O3} (aq)}\]
Here O.N. of none of the atoms undergo a change and therefore, it is not a redox reaction.
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