`50 mL` of standard gold solution needs `0.05 mg` of gelatin for its protection from coagulation. Calculate the gold number of gelatine?

Explanation

50 mL of gold sol require gelatin for protection from coagulation = 0.05 mg
10 mL of gold sol will require gelatin for protection from coagulation = `0.05/50 xx 10 =0.01 mg`
`:.` Gold number of gelatin = 0.01.