A 20.3 mL sample of 0.263 Mtriethylamine, (C2H5)3N, is titratedwith 0.252 M hydrochloric acid.(1) At the titration midpoint, the pH is. (2) At the equivalence point, the pHis .

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Answered: A 20.3 mL sample of 0.263 M…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter15: Complex Acid/base Systems

Section: Chapter Questions

Problem 15.7QAP

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A 10.00-g sample of the ionic compound NaA, where A is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl. After 500.0 mL HCl was added, the pH was 5.00. The experimenter found that 1.00 L of 0.100 M HCl was required to reach the stoichiometric point of the titration. a. What is the molar mass of NaA? b. Calculate the pH of the solution at the stoichiometric point of the titration.
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A 20.3 mL sample of 0.263 M triethylamine, (C2H5)3N, is titrated with 0.252 M hydrochloric acid. (1) At the titration midpoint, the pH is . (2) At the equivalence point, the pH is .