Question

A coordination compound X gives pale yellow colour with `AgNO_(3)` solution while its isomer Y gives white precipitate with `BaCl_(2)` . Two compounds are isomers of `CoBrSO_(4)* 5NH_(3)` . What could be the possible formula of X and Y ?
A. X = `[Co(NH_(3))_(5)SO_(4)] Br, Y = [Co(NH_(3))_(5) Br]SO_(4)`
B. `X = [Co(NH_(3))_(5)Br]SO_(4) , Y = [Co(NH_(3))_(5)SO_(4)]Br`
C. `X = [Co(NH_(3))_(5)Br(SO_(4))] , Y = [CoBr(SO_(4))(NH_(3))_(5)]`
D. `X = [Co(Br_(5) NH_(3)]SO_(4) , Y = [CoBr(SO_(4))]NH_(3)`

Answer 1

Correct Answer - A
`[Counderset(X)((NH_(3))_(5)) SO_(4) ]Br to [Co(NH_(3))_(5) SO_(4)]^(+) + Br^(-)`
`AgNO_(3) + Br^(-) to underset("pale yellow") (AgBr) + NO_(3)^(-)`
`[Co(NH_(3))_(5)Br]SO_(4) to [Co(NH_(3))_(5)Br]^(2+) + SO_(4)^(2-)`
`BaCl_(2) + SO_(4)^(2-) to underset("white ppt.")(BaSO_(4)) + 2 Cl^(-)`