Chlorine is used to prevent the growth of bacteria in swimming pool water. It reacts
as shown below.
Cl_2(aq) + H_2O(l) <-----------> HCl(aq) + HClO(aq)
By giving appropriate oxidation numbers, explain why this is a
Disproportionation reaction is a type of redox reaction in which a species is both oxidized and reduced at the same time. Let us try to solve this reaction by giving out the oxidation state of every species.
0 +1 -2 +1 -1 +1 +1 -2
`Cl_(2)_(aq) + H_(2)O_((l)) <=> HCl_((aq)) + HClO_((aq))`
Looking at the reaction, chlorine has two oxidation numbers in the products side. HCl has an oxidation number of -1 and HClO has an oxidation number of +1.
So if we have to take the chlorine alone, it can be written as:
`Cl ^(0) -> Cl ^(-1) + Cl ^(+1)`