The sulfur content of an iron pyrite ore sample is determined by converting it to H2S gas, absorbing the H2S in 10.0 mL of 0.00600 M 12, and then back-titrating the excess l2 with 0.00200 M NazS203. If 2.8 mL Na2S2O3 is required for the titration, how many milligrams of sulfur are contained in the sample? H2S + 12 S+ 21 + 2H*; I2 + 2S2032- → 21 + S4O62 H 1.008; O 15.999; S 32.06; I 126.90

The sulfur content of an iron pyrite ore sample is determined by converting it to H2S gas, absorbing the H2S in 10.0 mL of 0.00600 M 12, and then back-titrating the excess l2 with 0.00200 M NazS203. If 2.8 mL Na2S2O3 is required for the titration, how many milligrams of sulfur are contained in the sample? H2S + 12 S+ 21 + 2H*; I2 + 2S2032- → 21 + S4O62 H 1.008; O 15.999; S 32.06; I 126.90

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.35QAP

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