The flocculation value of \( \mathrm{HCl} \) for arsenic sulphide sol. is \( 30 \mathrm{~m} \mathrm{mol} \mathrm{~L}^{-1…

The flocculation value of \( \mathrm{HCl} \) for arsenic sulphide sol. is \( 30 \mathrm{~m} \mathrm{mol} \mathrm{~L}^{-1} \). if \( \mathrm{H}_{2} \mathrm{SO}_{4} \) is used for the flocculation of arsenic sulphide, the amount, in grams, of \( \mathrm{H}_{2} \mathrm{SO}_{4} \) in 250\( \mathrm{~ml} \) required for the above purpose is

(Molecular mass of \( \mathrm{H}_{2} \mathrm{SO}_{4}=98 \mathrm{~g} / \mathrm{mol} \) )