Phosphoric acid is triprotic with the step-wise dissociation shown below. A 1.27 M 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 Ke<1, then 0.1-x - 0.1) H20 + Kat = 7.5z10 3 H,PO, H2PO, H30 H,PO, H20 HPO H30 K2 = 6.2r10 * HPO H20 + PO H30 Kaa = 4.8z10 13 What is the pH of this solution? Report pH as a number and not in scientific notation.

Phosphoric acid is triprotic with the step-wise dissociation shown below. A 1.27 M 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 Ke<1, then 0.1-x - 0.1) H20 + Kat = 7.5z10 3 H,PO, H2PO, H30 H,PO, H20 HPO H30 K2 = 6.2r10 * HPO H20 + PO H30 Kaa = 4.8z10 13 What is the pH of this solution? Report pH as a number and not in scientific notation.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.

Question

Phosphoric acid is triprotic with the step-wise dissociation shown belovw. A 1.27 M 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)
H20 +
Kal = 7.5z10
H3PO,
H¿PO,
H30
H¿PO,
H20 +
HPO
H3O+
Kaz = 6.2z10- 8
HPO
H2O
PO
= 4.8z10 13
H30
What is the pH of this solution?
Report pH as a number and not in
scientific notation.

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