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Which of the following pair (s) of ions ...

Which of the following pair (s) of ions would be expected to form precipitate when dilute solutions are mixed?

A

`NH_(4)^(+),[Co(NO_(2))_(6)]^(3-)`

B

`NH_(4)^(+),CO_(3)^(2-)`

C

`Fe^(3+),OH^(-)`

D

`Ba^(2+),SO_(4)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
`(NH_(4))_(2)CO_(3)` is soluble. `(NH_(4))_(3) [Co(NO_(2))_(6)]darr` (yellow), `Fe(OH)_(3)darr` (Reddish brown), `BaSO_(4)darr` (white).
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Knowledge Check

  • Which of the following pairs of ions would be expected to form precipitate when dilute solution are mixed ?

    A
    `Fe^(3+),Pb_(4)^(3-)`
    B
    `NH_(4)^(Theta),CO_(3)^(2-)`
    C
    `Na^(o+),SO_(4)^(4-)`
    D
    `Na^(o+),S_(2)^(2-)`

  • Which of the following pairs of ions would be expected to form precipitate when dilute solution are mixed ?

    A
    `Na^(+),SO_(4)^(2-)`
    B
    `NH_(4)^(+),CO_(3)^(2-)`
    C
    `Na^(+),S_(2)^(2-)`
    D
    `Fe^(3+),PO_(4)^(3-)`

  • Which pair would not be expected to form precipitate when solution are mixed?

    A
    `K^(o+),SO_(4)^(2-)`
    B
    `Na^(o+),S^(2-)`
    C
    `Ag^(o+),NO_(3)^(Θ)`
    D
    `Al^(3+),HO^(Θ)`

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