Freshly prepared precipitate of Fe(OH)_3 is p | vedclass

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Question

(B) Peptization is the process of converting a precipitate into a colloidal sol by shaking it with an electrolyte in the presence of a small amount of

Vedclass · Accepted Answer

$Fe^{3+}$ ions

Vedclass · Answer

(B) Peptization is the process of converting a precipitate into a colloidal sol by shaking it with an electrolyte in the presence of a small amount of a dispersion medium. In the case of $Fe(OH)_3$ precipitate,when $FeCl_3$ is added,the common $Fe^{3+}$ ions are preferentially adsorbed on the surface of the $Fe(OH)_3$ particles. This results in the formation of positively charged colloidal particles of $Fe(OH)_3 \cdot Fe^{3+}$. Therefore,the charge on the colloidal particles is due to the adsorption of $Fe^{3+}$ ions.

Freshly prepared precipitate of $Fe(OH)_3$ is peptized by adding a solution of $FeCl_3$. The charge on the colloidal particles is due to the adsorption of ........

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