A pH 7.0 buffer solution is made using NaOH and phosphoric acid. The sum of the concentrations of all phosphoric acid species is 0.1 M. The equilibrium constant Kw for the ionization of water is 10-14 and K's for the following equilibria are given: H3PO4 H* + H2PO4 K1 = 7.1×10 3 H2PO4 H + HPО K2 = 6.2x10 8 3- HPO4?- H* + PO, K3 = 4.5×10-13 Calculate the concentrations of all species in solution. Formulas: pH =-log1o[H'], pK=-log1,K 510L

A pH 7.0 buffer solution is made using NaOH and phosphoric acid. The sum of the concentrations of all phosphoric acid species is 0.1 M. The equilibrium constant Kw for the ionization of water is 10-14 and K's for the following equilibria are given: H3PO4 H* + H2PO4 K1 = 7.1×10 3 H2PO4 H + HPО K2 = 6.2x10 8 3- HPO4?- H* + PO, K3 = 4.5×10-13 Calculate the concentrations of all species in solution. Formulas: pH =-log1o[H'], pK=-log1,K 510L

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

Chapter20: Molecular Spectroscopy And Photochemistry

Section: Chapter Questions

Problem 67CP

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