State what was the mass percent of arsenic trichloride

Reference no: EM13206208

A 2.335 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution. To this solution was added 1.550 grams of KI and 50.00 mL of a 0.00855 M KIO3 solution. The excess I3- was titrated with 50.00 mL of a 0.02000 M Na2S2O3 solution. What was the mass percent of arsenic trichloride in the original sample?

Reference no: EM13206208

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