Cations are classified into varius group on the basis of their behaviour against some reagents .The group reagent used for the classifaction of most common cation are `HCI,H_(2)S,NH_(4)OH,(NH_(4))_(2)CO_(3)` Classification is based on whether a cation reacts with these reagents by the formation of precipitates or not . An aqueous solution contain `Hg^(2+),Hg_(2)^(2+),Pb^(2+)`.THe addition of `2M HCI` will procipitate.A. `HgCI_(2)`onlyB. `PbCI_(2)"only"^(-)`C. `PbCI_(2)` and `Hg_(3)CI_(2)`D. `PbCI_(2)` and `CdCI_(2)`

Cations are classified into varius group on the basis of their behavio

1.	Cations are classified into varius group on the basis of their behaviour against some reagents .The group reagent used for the classifaction of most common cation are `HCI,H_(2)S,NH_(4)OH,(NH_(4))_(2)CO_(3)` Classification is based on whether a cation reacts with these reagents by the formation of precipitates or not . An aqueous solution contain `Hg^(2+),Hg_(2)^(2+),Pb^(2+)`.THe addition of `2M HCI` will procipitate.A. `HgCI_(2)`onlyB. `PbCI_(2)"only"^(-)`C. `PbCI_(2)` and `Hg_(3)CI_(2)`D. `PbCI_(2)` and `CdCI_(2)`
Answer» Correct Answer - c `2M MCI` is group reagent for reagent for group 1 cation `PbCI_(2)` And `HgCI_(2)` will get precipitated, is their solubility products `(K_(sp))` are less than that of other radical

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