The coagulation of 100 mL of colloidal solution of gold is completely prevented by addition of 0.25 g of a substance 'X' to it before addition of 1 mL of 10% NaCl solution. The gold number o

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The coagulation of 100 mL of colloidal solution of gold is completely prevented by addition of 0.25 g of a substance 'X' to it before addition of 1 mL of 10% NaCl solution. The gold number of 'X' is

TestHub · Accepted Answer

Number of milligrams of protective colloid added in 10 mL of colloidal gold to prevent its coagulation on addition of 1 mL of 10% NaCl solution is called gold number.
So gold number of present colloid = 25.

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