Answered: Phosphoric acid (H3PO4) is tribasic,…

Phosphoric acid (H3PO4) is tribasic, with pKa's of 2.14, 6.86, and 12.4. The charge of the ionic form of the conjugate base that predominates at pH 8 is _______ .

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter15: Solutions Of Acids And Bases

Section: Chapter Questions

Problem 15.16QE

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Question

Phosphoric acid (H3PO4) is tribasic, with pKa's of 2.14, 6.86, and 12.4. The charge of the ionic form of the conjugate base that predominates at pH 8 is _______ .

Expert Solution

Step 1

Given: pK_a's of phosphoric acids are 2.14, 6.86 and 12.4.

And the pH of the solution = 8

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