When `6xx10^(-5)g` of a protective colloid was added to `20mL` of a standard gold sol, the precipitation of latter was just prevented on addition of `2mL` of `10%NaCl` solution. The gold number of a protective colloid is

When 1.0 xx 10^(-5) mg of a protective colloid is added to 20 ml of standard gold sol, the precipitation of gold sol was prevented by adding 5 ml of 10% solution of NaCl. If the gold number of protective colloid is 2.0 x 10^(-x) mg then x is = __?

10^(-4) g of gelatin is required to be added to 100 ml of standard gold sol to just prevent its precipitation by addition of 1 ml of 10% NaCI solution to it. Hence the gold number of gelatin is:

10^(-4)g of gelatian is required to be added to 100cm^(23) of a standard gold sol to just prevent its coagulation by the addition of 1cm^(3) of 10%NaCl solution to it. Hence the gold number of gelatain is

One gram of a protective colloid 'X' is to be added to 200ml of gold sol to prevent coagulation of it when 20 ml of 10% NaCl is added. Calculate the gold number of protective colloid 'X'.

One gram of a protective colloid 'X' is to be added to 200ml of gold sol to prevent coagulation of it when 1 ml of 10% NaCl is added. Calculate the gold number of protective colloid 'X'.

The coagulation of 100mL of a colloidal solution of gold is completely prevented by adding 0.25g of starch to it before adding 10mL of 10%NaCl solution. The gold number of starch is

The coagulation of 100mL of a colloidal solution of gold is completely prevented by adding 0.25g of starch to it before adding 10mL of 10%NaCl solution. The gold number of starch is