The gold number is maximum for which of the f | vedclass

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(D) The gold number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum amount of the protective colloid (in $mg

Vedclass · Accepted Answer

Potato starch

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(D) The gold number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum amount of the protective colloid (in $mg$) that must be added to $10 \ mL$ of a standard red gold sol to prevent its coagulation when $1 \ mL$ of a $10\%$ $NaCl$ solution is added. Lower gold number indicates higher protective power. Among the given options,Gelatin has a very low gold number $(0.005-0.01)$,while Potato starch has a significantly higher gold number $(20-25)$. Therefore,the gold number is maximum for Potato starch.

The gold number is maximum for which of the following lyophilic sols?

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