In a galvanic cell, the cathode consists of a Ag*(1.00 M)| Ag half-cell. The anode is a platinum wire, with hydrogen bub- bling over it at 1.00-atm pressure, which is immersed in a buffer solution containing benzoic acid and sodium benzo- ate. The concentration of benzoic acid (CH;COOH) is 0.10 M, and that of benzoate ion (C,H;COO") is 0.050 M. The overall cell reaction is then Ag* (aq) + H2(g) + H20(€) → Ag(s) + H;O* (aq) and the measured cell potential is 1.030 V. Calculate the pH in the buffer solution and determine the K, of benzoic acid.

In a galvanic cell, the cathode consists of a Ag(1.00 M)| Ag half-cell. The anode is a platinum wire, with hydrogen bub- bling over it at 1.00-atm pressure, which is immersed in a buffer solution containing benzoic acid and sodium benzo- ate. The concentration of benzoic acid (CH;COOH) is 0.10 M, and that of benzoate ion (C,H;COO") is 0.050 M. The overall cell reaction is then Ag (aq) + H2(g) + H20(€) → Ag(s) + H;O* (aq) and the measured cell potential is 1.030 V. Calculate the pH in the buffer solution and determine the K, of benzoic acid.

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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Question

In a galvanic cell, the cathode consists of a Ag*(1.00 M)| Ag
half-cell. The anode is a platinum wire, with hydrogen bub-
bling over it at 1.00-atm pressure, which is immersed in a
buffer solution containing benzoic acid and sodium benzo-
ate. The concentration of benzoic acid (CH;COOH) is
0.10 M, and that of benzoate ion (C,H;COO") is 0.050 M.
The overall cell reaction is then
Ag* (aq) + H2(g) + H20(€) → Ag(s) + H;O* (aq)
and the measured cell potential is 1.030 V. Calculate the
pH in the buffer solution and determine the K, of benzoic
acid.

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