Which of the following compounds will not dis | vedclass

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Question

(A) $Al(OH)_3$,$Cr(OH)_3$,and $Zn(OH)_2$ are amphoteric hydroxides. They react with strong bases like $NaOH$ to form soluble complex salts (e.g.,$[Al(

Vedclass · Accepted Answer

$Fe(OH)_3$

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(A) $Al(OH)_3$,$Cr(OH)_3$,and $Zn(OH)_2$ are amphoteric hydroxides. They react with strong bases like $NaOH$ to form soluble complex salts (e.g.,$[Al(OH)_4]^-$,$[Cr(OH)_4]^-$,and $[Zn(OH)_4]^{2-}$).$Fe(OH)_3$ is a basic hydroxide and does not exhibit amphoteric character. Therefore,it does not dissolve in $NaOH$ solution.The reaction for $Fe(OH)_3$ solubility is governed by its $K_{sp}$ value $(6.3 	imes 10^{-38})$,which is extremely low,confirming it is insoluble in basic media.

Which of the following compounds will not dissolve in a hot mixture of $NaOH$ and $H_2O$?

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