The diprotic acid, H2A, has Ka1 i.e. (K1) = 1.00 X 10-4 and K2 = 1.00 X 10-8. = 4.00 and pK, = 8.00.10-23. The diprotic acid H,A has pK|(a) At what pH is [H2A] = [HA¯]?(b) At what pH is [HA-] = [A²-]?(c) Which is the principal species at pH 2.00: H,A, HA¯, or A²-?(d) Which is the principal species at pH 6.00?(e) Which is the principal species at pH 10.00?

In this question, we have to find out the correct answer of given problem by the help of the…

Answered: = 4.00 and pK, = 8.00. 10-23. The…

= 4.00 and pK, = 8.00. 10-23. The diprotic acid H,A has pK| (a) At what pH is [H2A] = [HA¯]? (b) At what pH is [HA¯] = [A²-]? %3D

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

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Chapter8: Polyfunctional Acids And Bases

Section: Chapter Questions

Problem 4P

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Concept explainers

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

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Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

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Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

Question

The diprotic acid, H₂A, has K_a1 i.e. (K₁) = 1.00 X 10-4 and K₂ = 1.00 X 10-8.

= 4.00 and pK, = 8.00.
10-23. The diprotic acid H,A has pK|
(a) At what pH is [H2A] = [HA¯]?
(b) At what pH is [HA-] = [A²-]?
(c) Which is the principal species at pH 2.00: H,A, HA¯, or A²-?
(d) Which is the principal species at pH 6.00?
(e) Which is the principal species at pH 10.00?

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