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Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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
Transcribed Image Text:4. Answer the following questions using the below titration curve for H3PO4 (a triprotic acid). The
titrant being added to the acid is NaOH.
14
Hd
12
10
00
6
4
0
0.5
1.5
Equivalents OH™
B) What is the approximate pKa, value of HPO42-?
2
A) Label all of the approximate pka points on the above curve.
C) What is the dominant species of the titration mixture at pH = 4.5?
2.5
3
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- can someone determine the equivalence points of these graphs and explain how you got those values? thank youarrow_forwardIf we have 10 mL of 1.0 M H3PO4 and are titrating it with 1.0 M NAOH, what are the equivalence volumes of NAOH at each of the equivalence points? urite 3 pointsarrow_forwardPart D A 52.0-mL volume of 0.35 M CH3COOH (Ka = 1.8 x 10-5) is titrated with 0.40 M NaOH. Calculate the pH after the addition of 33.0 mL of NaOH. Express your answer numerically. Farrow_forward
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- You have 0.500 L of an 0.250 M acetate buffer solution (i.e. [HC2H3O2] + [C2H;O2] = 0.250 M) at pH 3.50. How many mL of 1.000 M NaOH must you add in order to change the pH to 5.37? Acetic acid has a pka of 4.74. mL 1 2 3 4 C 7 8 9. +/- х 100 +arrow_forwardDescribe the shape of the titration curve shown, describe why it has this shape.arrow_forwardQuestion is in the image, I got 3.07E-8 mmol protons produced. Need to confirm if this is correct.arrow_forward
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