Colloidal solution of gold cannot be prepared | vedclass

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Question

(D) Colloidal solutions of metals like gold,silver,and platinum are typically prepared by Bredig's arc method or by the reduction of their salt soluti

Vedclass · Accepted Answer

Exchange of solvents

Vedclass · Answer

(D) Colloidal solutions of metals like gold,silver,and platinum are typically prepared by Bredig's arc method or by the reduction of their salt solutions (e.g.,reduction of $AuCl_3$ with formaldehyde or stannous chloride). Mechanical dispersion is generally used for substances like sulfur or ink. Exchange of solvents is used for substances like sulfur or phosphorus,which are soluble in alcohol but insoluble in water. Therefore,the colloidal solution of gold cannot be prepared by the exchange of solvents.

Colloidal solution of gold cannot be prepared by:

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