For the second dissociation of H, CO3: HCO3(aq) + H,O=H;O) + COaq) + CO3(aq) (1) a. At what volume of added HNO, does the pH = pKa? b. What is the pH at this point? c. What is the pk, for the first dissociation according to the literature?

For the second dissociation of H, CO3: HCO3(aq) + H,O=H;O) + COaq) + CO3(aq) (1) a. At what volume of added HNO, does the pH = pKa? b. What is the pH at this point? c. What is the pk, for the first dissociation according to the literature?

Chemistry

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Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter17: Spontaneity, Entropy, And Free Energy

Section: Chapter Questions

Problem 100CWP

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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

For the second dissociation of H,CO3:
HCO
3(aq) + H,O = H;O ag)
+ CO?-
2
3(aq)
a. At what volume of added HNO, does the pH = pkg?
b. What is the pH at this point?
c. What is the pk, for the first dissociation according to the
literature?
d. What is your percent error for this pka value? Show your work.

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