The potentiometric titration of a weak acid against a stong base is shown below. For A) calculate the pH at different stages of the titration using the appropriate chemical equation & formula and then select the appropriate answer. Example of answer: Between pH 1 and 2. A.) - Between what is the pH of the solution before any strong base has been added? - Between what is the pH of the solution after 10.00mL of strong base has been added? - Between what is the pH of the solution after 25.00mL of strong base has been added? - Between what is the pH of the solution after 40.00mL of strong base has been added? - Between what is the pH of the solution after 50.00mL of strong base has been added? - Between what is the pH of the solution after 60.00mL of strong base has been added? B.) Give the name of another weak acid that will have a similar titration curve. Briefly explain the reason for the similarity.

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter16: Applications Of Neutralization Titrations
Section: Chapter Questions
Problem 16.20QAP
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The potentiometric titration of a weak acid against a stong base is shown below. For A) calculate the pH at different stages of the titration using the appropriate chemical equation & formula and then select the appropriate answer. Example of answer: Between pH 1 and 2. A.) - Between what is the pH of the solution before any strong base has been added? - Between what is the pH of the solution after 10.00mL of strong base has been added? - Between what is the pH of the solution after 25.00mL of strong base has been added? - Between what is the pH of the solution after 40.00mL of strong base has been added? - Between what is the pH of the solution after 50.00mL of strong base has been added? - Between what is the pH of the solution after 60.00mL of strong base has been added? B.) Give the name of another weak acid that will have a similar titration curve. Briefly explain the reason for the similarity.

Weak Acid and Strong Base Titration
A 50.00-mL aliquot of 0.0500M formic acid
(K, = 1.80 x 10-4) is titrated with 0.0500 M
strong base.
%3!
12
Titration of weak acid HA with strong base OH
HA OH A+ H,0
Equivalence point
AHOHA + OH
F-X
Excess OH
Bufter region
JA
pH- pk, log
HA
Intial point
HAHA
F-X X X
F-
20
40
Volume of base added (V.)
Hd
Transcribed Image Text:Weak Acid and Strong Base Titration A 50.00-mL aliquot of 0.0500M formic acid (K, = 1.80 x 10-4) is titrated with 0.0500 M strong base. %3! 12 Titration of weak acid HA with strong base OH HA OH A+ H,0 Equivalence point AHOHA + OH F-X Excess OH Bufter region JA pH- pk, log HA Intial point HAHA F-X X X F- 20 40 Volume of base added (V.) Hd
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