# 11) One gram of $N{a}_{3}As{O}_{4}$ is boiled with excess of solid KI in presence of strong HCI. The iodine evolved  is absorbed in KI solution and titrated against 0.2 N hypo solution. Assuming the reaction to be $As{O}_{4}^{3-}+2H+2I\to As{O}_{3}^{3-}+{H}_{2}O+{I}_{2}$ calculate the volume of hypo consumed [Atomic weight of As = 75] (A) 48.1 mL (B) 38.4 mL (C) 24.7 mL (D) 30.3 mL

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