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Al(OH)(3) darr "(white)" + OH^(-) to [Al...

`Al(OH)_(3) darr "(white)" + OH^(-) to [Al(OH)_(4)]^(-)` soluble complex
White precipitate of `Al(OH)_(3)` reappears when

A

a solution of ammonium chloride is added

B

a solution of ammonia is added

C

concentrated `HNO_(3)` is added in excess

D

all of these

Text Solution

Verified by Experts

The correct Answer is:
A
`underset("white ppt")(Al(OH)_(3))+OH^(-) to underset("soluble")([Al(OH)_(4)]^(-))`
`[Al(OH)_(4)]^(-)+NH_(4)^(+) to Al(OH)_(3) darr +H_(2)O+NH_(3) uarr`
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