A complex, salt with formula [Co(NH_(3))_(6)] Cl_(3) can form a white curdy precipitate with silver nitrate solution. Another complex with same ligands cannot form precipitate with AgNO_(3) solution. What would be the probable formula of the complex ? Given reasons in support of your answer.

A complex, salt with formula [Co(NH_(3))_(6)] Cl_(3) can form a white

1.	A complex, salt with formula [Co(NH_(3))_(6)] Cl_(3) can form a white curdy precipitate with silver nitrate solution. Another complex with same ligands cannot form precipitate with AgNO_(3) solution. What would be the probable formula of the complex ? Given reasons in support of your answer.
Answer» SOLUTION :In a complex salt, there are two parts namely COORDINATION sphere and ionisation sphere. The part present in ionisation sphere gives reactions of the respective ions. But the part present in coordination sphere gives the reactions of complex ions only and cannot give reactions of individual ions. In the complex of the FORMULA `[Co(NH_(3))_(3)] Cl_(3)`, chloride ions are present in the ionisation sphere and give the reactions of `Cl^(-)` ions. The complex `[Co(NH_(3))_(3)Cl_(3)]` has no chloride ions in the ionisation sphere ADN does not give the reactions of `Cl^(-)` ions because the components present within the sphere do not further undergo and hydrolysis and hence, do not behave INDEPENDENTLY.