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On the basis of Werner's theory explain, why cobalt amine complex, CoCl_(3)4NH_(3) when treated with AgNO_(3) solution precipitates only one Cl^(-) ion even though there are three Cl^(-) ions. |
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Answer» Solution :The complex, `CoCl_(3)4NH_(3)` with `AgNO_(3)` solution precipitates only one `CL^(-)` ion. `CoCl_(3)4NH_(3)OVERSET(AgNO_(3)"soln")rarrunderset("ppt")(AgCl)` This indicates that, on inonisation the complex GIVES only one `Cl^(-)` Hence according to Werner's theory, out of `3Cl^(-)`, there will be `2CL^(-)` in the coordination sphere as ligands and one `Cl^(-)` in the ionisation sphere or OUTER sphere. Hence formula of the complex must be `[Co(NH_(3))_(4)Cl_(2)]Cl.` `[Co(NH_(3))_(4)Cl_(2)]Clrarr [Co(NH_(3))_(4)Cl_(2)]^(+)+Cl^(-)` `AgNO_(3)+Cl^(-)rarr underset("ppt")(AgCl)+NO_(3)^(-)` |
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