The hydrogen phthalate ion, C 8 H 5 O 4 , is a weak acid with

Question:

The hydrogen phthalate ion, C8H5O4, is a weak acid with Ka = 3.91 × 10−6.C8H5O4 (aq) + HO(l) CH4O42-(aq) + H3O+ (aq)

What is the pH of a 0.050 M solution of potassium hydrogen phthalate, KC8H5O4? Note: To find the pH for a solution of the anion, we must take into account that the ion is amphiprotic. It can be shown that, for most cases of amphiprotic ions, the H3O+ concentration is[H3O+] = Kal X Ka2

For phthalic acid, C8H6O4, Ka1 is 1.12 × 10−3, and Ka2 is 3.91 × 10−6.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Question Posted: