question_answer

100 mL of a standard sol requires 240 mg of starch for its protection against coagulation. Calculate gold number of starch.

Answer:

                Amount of starch required for 100 mL of gold sol = 240 mg Amount of starch required for 10 mL of gold sol \[=\frac{240\times 10}{100}\,=24\,\,mg\] Therefore, gold number of starch = 24