what is gold number & how it works?
question is related to surface chemistry.
64 Views|Posted 2011-11-10 19:06:04
Asked by Vasudha Soni
1 Answer
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Answered by
2011-11-10 19:21:58
it is the minimum amount of lyophilic colloid in milligrams which prevents the coagulation of 10 ml gold sol against 1 ml of 10%NaCl solution in collidel chem..Coagulation of gold sol is shown by colour change from red to blue when particle size just increases... More is the gold number less is the
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