On adding a few drops of dilute HCl or FeCl_3 | vedclass

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(A) The process of converting a freshly prepared precipitate into a colloidal sol by adding a suitable electrolyte is known as $Peptization$. In this

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Peptization

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(A) The process of converting a freshly prepared precipitate into a colloidal sol by adding a suitable electrolyte is known as $Peptization$. In this case,the electrolyte ($HCl$ or $FeCl_3$) acts as a peptizing agent,which adsorbs onto the surface of the precipitate particles,causing them to break down into colloidal-sized particles due to electrostatic repulsion. Therefore,the correct answer is $Peptization$.

On adding a few drops of dilute $HCl$ or $FeCl_3$ to freshly precipitated ferric hydroxide,a red-coloured colloidal solution is obtained. This phenomenon is called:

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