1.

Roasted silver ore +CN-_((aq))+O_(2) to [X]_((aq))+OH_((aq))^(-),[X]_((aq))+Zn to [Y]_((aq))+Agdarr The [X] and [Y] are respectively :

Answer»

`[Ag(CN)_(2)]^(-),[Zn(CN)_(6)]^(-4)`
`AgCN,[Zn(CN)_(4)]^(-2)`
`[Ag(CN)_(4)]^(-3),[Zn(CN)_(4)]^(-2)`
`[Ag(CN)_(2)]^(-),[Zn(CN)_(4)]^(-2)`

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