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What sorts of informations you can draw ...

What sorts of informations you can draw from the following reaction ?
`(CN)_(2)(g) + 2OH^(-) (aq) to CN^(-) (aq) + CNO^(-) (aq) + H_(2)O(1)`

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a. It is a disproportionation reaction.
b. Cyanogen `(CN)_(2)` gets simultaneously reduced to `CN^(Θ)` ion as well as oxidised to cyanate ion.
c. oxidation number of `N` in `(CN)_(2)` is `-3` while that in `CN^(Θ)` is` -2` and in `CNO^(Θ)` is `-5`.
d. The reaction occurs in basic medium.
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