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White precipitate of Zn(OH)(2) dissolves...

White precipitate of `Zn(OH)_(2)` dissolves in:

A

sodium hydroxide solution

B

acid solution

C

ammonia solution

D

solution of ammonium salts

Text Solution

Verified by Experts

The correct Answer is:
A,B,C,D
(A)`Zn(OH)_(2)darr+2OH^(-)to[Zn(OH)_(4)]^(2-)`
(B)`Zn(OH)_(2)darr +2H^(+) hArr Zn^(2+) + 2H_(2)O`
( C) & (D) White precipitate of `Zn(OH)_(2)` dissolves in excess of ammonia solution and in solutions of ammonium salts owing to the production of tetraamminezincate (II).
`Zn(OH)_(2)darr +4NH_(3) hArr [Zn(NH_(3))_(4)]^(2+)+2OH^(-)`
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Knowledge Check

  • Identify (A) + N_(2) overset(Delta) rarr (B) overset(H_(2) O) rarr underset("White ppt.") ((C)darr) (D)_((g)) White precipitate ( C) dissolves is NaOH solution the gas (D) gives white fumes with HCl .

    A
    B
    B
    AI
    C
    GA
    D
    C

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