25. Solution to Chemistry Problem
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25. Solution to Chemistry Problem
1. Lead was precipitated from 3.2057 g of the alloy as PbCrO4. By treating the precipitate with acid and KI, I2 was isolated, and 9.15 ml of 0.1028 M Na2S2O3 were used for titration. Calculate the mass fraction of Pb in the alloy.
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