Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter17: Principles Of Chemical Reactivity: Other Aspects Of Aqueous Equilibria
Section17.6: Equilibria Involving Complex Ions
Problem 2.1ACP: Phosphate ions are abundant in cells, both as the ions themselves and as important substituents on...
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![Phosphoric acid is used widely in fertilizers and is used in certain types of pop to make them more tart. It is a triprotic
acid with a chemical formula H3PO4(aq). Estimate the pH and the concentrations of all species at equilibrium in a
0.520 M solution of phosphoric acid. The three acid dissociation steps are as follows:
H3PO4 (aq) + H2O (1) H2PO4 (aq) + H3O+ (aq)
H2PO4 (aq) + H2O (1) HPO42 (aq) + H3O+ (aq)
HPO4 (aq) + H2O (1) PO4 (aq) + H3O+ (aq)
Ка = 6.92 × 10
3
Kaz
= 6.17 x 108
Kas 4.79 x 10-13
a) H3PO4]:
b) H2PO4]:
c) [HPO2]:
d) PO3:
e) [H3O]:
f) pH:
M
M
M
M
M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F34522229-e598-4f2e-8d7a-d5c5e0098c8d%2Fe800b0b2-b894-49df-971e-86ca62156872%2Fxwmy5sm_processed.png&w=3840&q=75)
Transcribed Image Text:Phosphoric acid is used widely in fertilizers and is used in certain types of pop to make them more tart. It is a triprotic
acid with a chemical formula H3PO4(aq). Estimate the pH and the concentrations of all species at equilibrium in a
0.520 M solution of phosphoric acid. The three acid dissociation steps are as follows:
H3PO4 (aq) + H2O (1) H2PO4 (aq) + H3O+ (aq)
H2PO4 (aq) + H2O (1) HPO42 (aq) + H3O+ (aq)
HPO4 (aq) + H2O (1) PO4 (aq) + H3O+ (aq)
Ка = 6.92 × 10
3
Kaz
= 6.17 x 108
Kas 4.79 x 10-13
a) H3PO4]:
b) H2PO4]:
c) [HPO2]:
d) PO3:
e) [H3O]:
f) pH:
M
M
M
M
M
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