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On addition of aqueous NaOH to a salt so...

On addition of aqueous NaOH to a salt solution, a white gelatinous precipitate is formed, which dissolves in excess of alkali. The salt solution contains

A

Chromous ions

B

Aluminium ions

C

Barium ions

D

Iron ions.

Text Solution

Verified by Experts

`Al^(3+) +3OH^(-) to underset("White gelationous ppt.")(Al(OH)_(3))`
`Al(OH)_(3) (s) +NaOH (aq) to NaAlO_(2) (aq)+2H_(2)O (l)`.
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