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State two relevant observation Ammoni...

State two relevant observation
Ammonium hydroxide solution is added to zinc nitrate solution in minimum quantities and then in excess.

A

Colourless and soluble `[Zn(NH_(3))_(4)]^(2+)` is formed at the product side

B

Reddish Brown Colour precipitate of Zinc hydroxide and NaCl is formed at the product side

C

Zinc Oxide is formed at the product side.

D

Light Brown crystals of Copper hydroxide is formed at the end of product side

Text Solution

Verified by Experts

The correct Answer is:
A
Initially a white ppt is formed which disappears (dissolves) in excess of ammonium hydroxide.
`Zn(NO_(3))_(2) + 2NH_(4)OH rarr Zn(OH)_(2) darr + underset("White ppt.")(2NH_(4)NO_(3))`
`Zn(OH)_(2) + NH_(4)OH rarr underset("Colourless solution, soluble")([Zn(NH_(3))_(4)]^(2+))`
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