The flocculation value of H C l for arsenic sulphide s o l is 30 m m o l L - 1 . If H 2 S O 4 is used for the flocculation of arsenic sulphide, the amount, in grams, of H 2 S O 4 in 250 m l required for the above purpose is ________ (molecular mass of H 2 S O 4 = 98 g / m o l

Step-by-step solution

For 1 L sol 30   mmol of H C l is required ∴ For 1 L sol 15   mmol H 2 SO 4 is required For 250   mL of sol 15 4 × 10 - 3   mmol   H 2 SO 4 Mass of H 2 SO 4 = 3 . 75   ×   10 - 3 × 98   =   0.3675  g