please solve this

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 75AP
icon
Related questions
icon
Concept explainers
Question

please solve this 

Phosphoric acid is triprotic with the step-wise dissociation shown below. A 2.49M phosphoric acid solution
is prepared. Calculate the equilibrium concentrations of the species indicated. Report all answers in
scientific notation using 2 sig figs. Rather than use the quadratic equation, you can make assumptions like
we do in class (ie if K<<1, then 0.1-x - 0.1)
H3PO4
H2O
H¿PO,
Kal
7.5x10 -3
H3O+
H,PO,
H20 +
HPO
H30+
Ka2
6.2x10 -8
НРО
H20 +
PO
H3O+
Ka3 = 4.8x10 - 13
What is the pH of this solution?
Report pH as a number and not in
scientific notation.
Transcribed Image Text:Phosphoric acid is triprotic with the step-wise dissociation shown below. A 2.49M phosphoric acid solution is prepared. Calculate the equilibrium concentrations of the species indicated. Report all answers in scientific notation using 2 sig figs. Rather than use the quadratic equation, you can make assumptions like we do in class (ie if K<<1, then 0.1-x - 0.1) H3PO4 H2O H¿PO, Kal 7.5x10 -3 H3O+ H,PO, H20 + HPO H30+ Ka2 6.2x10 -8 НРО H20 + PO H3O+ Ka3 = 4.8x10 - 13 What is the pH of this solution? Report pH as a number and not in scientific notation.
Expert Solution
steps

Step by step

Solved in 2 steps with 3 images

Blurred answer
Knowledge Booster
Electronic Effects
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Principles of Modern Chemistry
Principles of Modern Chemistry
Chemistry
ISBN:
9781305079113
Author:
David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781337399074
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
Chemistry
ISBN:
9781133949640
Author:
John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9781305580350
Author:
William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning