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InterviewSolution
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On addition of one ml solution of 10% NaCl to10 ml. gold sol in presence of 0.025 g of starch,the coagulation is just prevented. The gold numberof starch is(1) 25 (2) 2.5 (3) 0.25 (4) 0.025 |
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Answer» 0.025 g of starch needed to prevent coagulation of 1 ml of 10 % NaClto 10 ml gold sol.Amount of starch = 0.025 g = 25 mgSo, gold number of starch = 25 |
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