The coagulation of 200 ml of a colloidal solution of gold is completely prevented by adding `0.50` gm of starch to it before add

The coagulation of 200 ml of a colloidal solution of gold is completely prevented by adding `0.50` gm of starch to
it before adding 1 ml of `10%` NaCl solution. Calculate the gold number of starch.

The coagulation of 200 ml of a colloidal solution of gold is completely prevented by adding `0.50` gm of starch to it before adding 1 ml of `10%` NaCl

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