Answered: When titrating a weak acid with a…

When titrating a weak acid with a strong base, which equation applies to the point where the acid is half- neutralized? A. pH = pka + log [acid] / [salt] B. pH = pka C. pH = 1/2 pka D. pH = 7.00

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria

Section17.3: Acid-base Titrations

Problem 17.6CYU: The titration of 0.100 M acetic acid with 0.100 M NaOH is described in the text. What is the pH of...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

When titrating a weak acid with a strong base, which
equation applies to the point where the acid is half-
neutralized?
A. pH = pka + log [acid] / [salt]
B. pH = pka
C. pH = ¹/2 pka
D. pH 7.00
=

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You titrate 25.0 mL of 0.10 M NH3 with 0.10 M HCl. (a) What is the pH of the NH3 solution before the titration begins? (b) What is the pH at the equivalence point? (c) What is the pH at the halfway point of the titration? (d) What indicator in Figure 17.11 could be used to detect the equivalence point? (e) Calculate the pH of the solution after adding 5.00, 15.0, 20.0, 22.0, and 30.0 mL of the acid. Combine this information with that in parts (a)(c) and plot the titration curve.
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