Answered: Henderson-Hasselbalch: Ammonia and…

Henderson-Hasselbalch: Ammonia and Ammonium Chloride Buffer Solution 10 9.5 9. 8.5 y = 1.053x + 8.4695 7.5 -1.5 -1 -0.5 0.5 1 1.5 log [NH3/NH4CI]* Hd

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter16: Reactions Between Acids And Bases

Section: Chapter Questions

Problem 16.84QE: Phenolphthalein is a commonly used indicator that is colorless in the acidic form (pH 8.3) and pink...

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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

Answer the question using the point-slope equation obtained from the graphs.

The Henderson-Hasselbalch equation for an ammonia / ammonium chloride buffer has the following form: pH = pka + log ([NH3 / NH4Cl]). According to the results obtained when graphing pH vs log ([NH3 / NH4Cl]), what is the pka value of NH3?

Henderson-Hasselbalch: Ammonia and
Ammonium Chloride Buffer Solution
10
9.5
9.
8.5
y = 1.053x + 8.4695
7.5
°iog [NH$/NH4CI]®S
-1.5
-1
-0.5
0.5
1
1.5
Hd

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