57. Solution to Chemistry Problem
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9. A weighed portion of iodophor CHI3 was fused with solid KOH, and the fusion was dissolved. Acid was added to the resulting KI solution, and the I- ions were oxidized to IO3- by the action of chlorine water. Excess chlorine was removed by boiling, then KI was added to the solution, and the released I2 was titrated with 23.22 ml of sodium thiosulfate solution with T(Na2S2O3/I2)=0.002560. What mass of iodoform was taken for analysis?
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