Question

12th
subject - chemistry
chapter - surface chemistry

can u tell me
what is Gold number

Answer 1

Gold Number is defined as the minimum amount of lyophilic colloid in milligrams which prevents the flocculation of 10ml gold sol by the addition of 1 ml of10%NaCl solution.
So it is measure ofcoagulating power of colloids....

hope it helps u.....

Answer 2

gold number is a term used in colloidal chemistry .it is defined as the minimum ammount of protective colloidal in milligrams which prevent a colour change from red to violet to 10 ml gold sol by the addition 1ml of 10%NACL solution