A). Calculate the molar concentration of 1.00 ppm solutions each of Lit and Pb²+. B). What weight of Pb(NO3)2 will have to be dissolved in 1 liter of water to prepare a 100 ppm Pb²+ solution? C). The sulfide content in a pulp plant effluent is determined with a sulfide ion selective electrode using the method of standard additions for calibration. A 10.0 mL sample is diluted to 25.0 mL with water and gives a potential reading of -216.4 mV. A similar 10.0 mL sample plus 1.00 mL of 0.030 M sulfide standard diluted to 25.0 mL gives a reading of -224.0 mV. Calculate the concentration of sulfide in the sample.

A). Calculate the molar concentration of 1.00 ppm solutions each of Lit and Pb²+. B). What weight of Pb(NO3)2 will have to be dissolved in 1 liter of water to prepare a 100 ppm Pb²+ solution? C). The sulfide content in a pulp plant effluent is determined with a sulfide ion selective electrode using the method of standard additions for calibration. A 10.0 mL sample is diluted to 25.0 mL with water and gives a potential reading of -216.4 mV. A similar 10.0 mL sample plus 1.00 mL of 0.030 M sulfide standard diluted to 25.0 mL gives a reading of -224.0 mV. Calculate the concentration of sulfide in the sample.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter17: Electrochemistry And Its Applications

Section: Chapter Questions

Problem 101QRT

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