Increasing acid strength 8. You are making a buffer solution made from a weak acid, HA, and the sodium salt of the conjugate base, NaA. You want the buffer to have a pH approximately cqual to 4.0, choose an acid from the list, and use a 0.350 M solution of the acid solution, and 30.0 g of the sodium salt (NaA). Calculate the pH of the buffer. Table 13-2 | values of K, for Some Common Monoprotic Acids Formula Name Value of K, Hydrogen sulfate ion Chlorous acid 12 x 10- 12 x 10 1.35 X 10 7.2 x 10 4.0 x 104 18 x 10- 14 X 10 HSO, HCIO, HC,H,CIO, Monochloracetic acid Hydrofluoric acid Nitrous acid Acetic acid HF HNO, HC,H,O, [AKH O Hydrated aluminum(i) ion Hypochlorous acid Hydrocyanic acid Ammonium ion 3.5 x 10- 6.2 x 10-10 5.6 X 10- 16 x 10 HOCI HCN NH," HOCH, Phenol *The units of K, atre customarily omitted.

Increasing acid strength 8. You are making a buffer solution made from a weak acid, HA, and the sodium salt of the conjugate base, NaA. You want the buffer to have a pH approximately cqual to 4.0, choose an acid from the list, and use a 0.350 M solution of the acid solution, and 30.0 g of the sodium salt (NaA). Calculate the pH of the buffer. Table 13-2 | values of K, for Some Common Monoprotic Acids Formula Name Value of K, Hydrogen sulfate ion Chlorous acid 12 x 10- 12 x 10 1.35 X 10 7.2 x 10 4.0 x 104 18 x 10- 14 X 10 HSO, HCIO, HC,H,CIO, Monochloracetic acid Hydrofluoric acid Nitrous acid Acetic acid HF HNO, HC,H,O, [AKH O Hydrated aluminum(i) ion Hypochlorous acid Hydrocyanic acid Ammonium ion 3.5 x 10- 6.2 x 10-10 5.6 X 10- 16 x 10 HOCI HCN NH," HOCH, Phenol *The units of K, atre customarily omitted.

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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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

Increasing acid strength
You are making a buffer solution made from a weak acid, HA, and the sodium salt of the
conjugate base, NaA. You want the buffer to have a pH approximately equal to 4.0, choose an
acid from the list, and use a 0.350 M solution of the acid solution, and 30.0 g of the sodium salt
8.
(NaA). Calculate the pH of the buffer.
Table 13-2 | Values of K, for Some Common Monoprotic Acids
Formula
Name
Value of K.
HSO,
HCIO,
HC,H,CIO,
Hydrogen sulfate ion
Chlorous acid
12 x 10
12 x 10
135 X 10
7.2 x 10
4.0 x 104
18 X 10-
Monochloracetic acid
Hydrofluoric acid
Nitrous acid
Acetic acid
Hydrated aluminum(I) lon
Hypochlorous acid
Hydrocyanic acid
Ammonium lon
Phenol
HF
HNO,
HC,H,0,
[ANH,O)J"
HOCI
14 X 10
3.5 x 10-
62 x 10-10
5.6 X 10-
16 x 10
HCN
NH,"
HOCH
*The units of K, are customarily omitted.

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