Problem 2 requires a constant calculated in Problem 1, but I can't figure out Problem 1. 1. The formation constant for the lead(II)-EDTA chelate, PbY2, is 1.10 x 1018. Calculate theconditional formation constant (K/) at: (a) pH = 3.00, and (b) pH = 10.0.%3D%3D 2. Using the conditional formation constant calculated above, calculate -log[Pb] for 50.00 mLof a solution of 0.0250 M Pb2*, at pH = 3.00, after the addition of: (a) 0.00 mL, (b) 50.0 mL, (c)125 mL, and (d) 200. mL of 0.0100 M EDTA.

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Answered: 1. The formation constant for the…

1. The formation constant for the lead(II)-EDTA chelate, PbY2-, is 1.10 x 1018. Calculate the conditional formation constant (K/) at: (a) pH = 3.00, and (b) pH = 10.0. %3D %3D

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.1QAP

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Question

Problem 2 requires a constant calculated in Problem 1, but I can't figure out Problem 1.

1. The formation constant for the lead(II)-EDTA chelate, PbY2, is 1.10 x 1018. Calculate the
conditional formation constant (K/) at: (a) pH = 3.00, and (b) pH = 10.0.
%3D
%3D

2. Using the conditional formation constant calculated above, calculate -log[Pb] for 50.00 mL
of a solution of 0.0250 M Pb2*, at pH = 3.00, after the addition of: (a) 0.00 mL, (b) 50.0 mL, (c)
125 mL, and (d) 200. mL of 0.0100 M EDTA.

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