Principles of Modern Chemistry
Principles of Modern Chemistry
8th Edition
ISBN: 9781305079113
Author: David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher: Cengage Learning
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Chapter 15, Problem 64P

Phthalic acid ( H 2 C 8 H 4 O 4 , abbreviated H 2 Ph ) is a diproticacid. Its ionization in water at 25°C takes place in twosteps:
   H 2 Ph ( a q ) + H 2 O ( l ) H 3 O + ( a q ) + HPh ( a q ) K a 1 = 1.26 × 10 3 H 2 Ph - ( a q ) + H 2 O ( l ) H 3 O + ( a q ) + Ph 2 ( a q ) K a 2 = 3.10 × 10 6
If 0.0100 mol of phthalic acid is dissolved per liter ofwater, calculate the equilibriumconcentrations of H 2 Ph , H P h , Ph 2 , and H 3 O + .

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Acid-Base Titration | Acids, Bases & Alkalis | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=yFqx6_Y6c2M;License: Standard YouTube License, CC-BY