30.82 mL of the I2 solution from above is required to titrate a sample containing As 2...
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Question:
30.82 mL of the I2 solution from above is required to titrate a sample containing As 2 O 3 . Calculate the mass of As 2 O 3 (197.8 g/mol) in the sample.
As 2 O 3 + 5(H 2 O) + 2I 2 → 2(H 3 AsO 4 ) + 4HI
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