Question

what is gold number?????

Answer 1

Hey there!!!

Gold Number: Gold number of a protective colloid is the minimum weight of it in milligrams which must be added to 10 ml of a standard red gold solution so that no coagulation of the gold solution takes place when 1ml of 10% NaCl solution is rapidly added in it.

Hope it helps!!!

Answer 2

Answer:

The Gold Number is the minimum weight (in milligrams) of a protective colloid required to prevent the coagulation of 10 ml of a standard hydro gold sol when 1 ml of a 10% sodium chloride solution is added to it. It was first used by Richard Adolf Zsigmondy.