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An cationic complex has two isomers A an...

An cationic complex has two isomers A and B . Each has one `Co^(3+)`, five `NH_3` , one `Br^(-)` and one `SO_4^(2-)` . A gives a white precipitate with `BaCl_2` solution while B gives a yellow precipitate with `AgNO_3` solution.
(a) What are the possible structures of the complexes A and B ?
(b) Will the two complexes have same colour ?

Text Solution

Verified by Experts

(a) Since the isomer A gives a white precipitate with `BaSO_4` solution , `S0_4^(2-)` ion is present as anion in the complex A . Since B gives a yellow precipitate with `AgNO_3` solution . `Br^(-)` ion is present as anion in it. The two isomers are ionisation isomers and are shows :
`[CO(NH_3)_(5)Br]SO_4` `[CO(NH_3)_(5)SO_4]Br`
(A) pentaaminebromidocobalt (III) sulphate (B) pentaamminesulphatecobalt (III) bromide.
(b) No, the two complexes have different colours. For details, consult Section 6.
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One cationic complex has to isomers A and B Each has one Co^(3+) five NH_(3) one CI^(Θ) and one SO_(4)^(2-) stoichiometically A give white precipitate with BaCI_(2) white B gives white precipitate with AgNO_(3) A can be .

One cationic complex has to isomers A and B Each has one Co^(3+) five NH_(3) one CI^(Θ) and one SO_(4)^(2-) stoichiometically A give white precipitate with BaCI_(2) white B gives white precipitate with AgNO_(3) (B) can be .

Which one of the following does not give a precipitate with AgNO_(3) solution ?

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Knowledge Check

  • One cationic complex has to isomers A and B Each has one Co^(3+) five NH_(3) one CI^(Θ) and one SO_(4)^(2-) stoichiometically A give white precipitate with BaCI_(2) white B gives white precipitate with AgNO_(3) A can be .

    A
    `[Co(NH_(3))_(5)]CISO_(4)`
    B
    `[Co(NH_(3))_(5)SO_(4)]CI`
    C
    `[Co(NH_(3))_(5)CI]SO_(4)`
    D
    `[Co(NH_(3))_(4)SO_(4)]CI.NH_(3)`

  • One cationic complex has to isomers A and B Each has one Co^(3+) five NH_(3) one CI^(Θ) and one SO_(4)^(2-) stoichiometically A give white precipitate with BaCI_(2) white B gives white precipitate with AgNO_(3) (B) can be .

    A
    `[Co(NH_(3))_(5)SO_(4)]CI`
    B
    `[CO(NH_(3))_(5)CI]SO_(4)`
    C
    `[Co(NH_(3))_(3)CI(SO_(4))]2NH_(3)`
    D
    None of these

  • Which one of the following does not give a precipitate with AgNO_(3) solution ?

    A
    `CrO_(4)^(2-)`
    B
    `Cl^(-)`
    C
    `SCN^(-)`
    D
    `ClO_(4)^(-)`