Maleic acid (H2A) is a weak polyprotic acid with two acidic protons. Figure 1 below presents the measured pH of 0.100 M maleic acid with an initial volume of 25.00 mL as it is titrated with a strong base, 0.100 M NaOH. Write down the primary reaction/s controlling the pH at each of the points on Figure 1 indicated in the table below. If there are two reactions, write them in the sequence that they occur: Volume At this point in the titration the pH is determined of 14 by the following reactions: 12 Second equivalence point (pH 9.4) NaOH added (mL) 10 First equivalence point (pH - 4.11 10 10 20 30 40 50 60
Maleic acid (H2A) is a weak polyprotic acid with two acidic protons. Figure 1 below presents the measured pH of 0.100 M maleic acid with an initial volume of 25.00 mL as it is titrated with a strong base, 0.100 M NaOH. Write down the primary reaction/s controlling the pH at each of the points on Figure 1 indicated in the table below. If there are two reactions, write them in the sequence that they occur: Volume At this point in the titration the pH is determined of 14 by the following reactions: 12 Second equivalence point (pH 9.4) NaOH added (mL) 10 First equivalence point (pH - 4.11 10 10 20 30 40 50 60
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:Maleic acid (H2A) is a weak polyprotic acid with two acidic protons. Figure 1 below presents the
measured pH of 0.100 M maleic acid with an initial volume of 25.00 mL as it is titrated with a strong
base, 0.100 M NaOH. Write down the primary reaction/s controlling the pH at each of the points on
Figure 1 indicated in the table below. If there are two reactions, write them in the sequence that they
occur:
Volume At this point in the titration the pH is determined
of
14
by the following reactions:
12
Second
equivalence
point (pH 9.4)
NaOH
added
(mL)
10
First
equivalence
point (pH - 4.11
10
10
20 30
40 50 60
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