
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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I don't understand what the xM is or how to find [H+]
![TUTOR Calculate pH Using the Nernst Equation
A concentration cell consisting of two hydrogen electrodes (PH, = 1 atm), where the cathode is
a standard hydrogen electrode and the anode solution has an unknown pH, has a cell voltage
of 0.186 V. What is the pH in the unknown solution? Assume the temperature of the solutions
is 298 K.
pH =
Submit
Show Approach Hide Tutor Steps
TUTOR STEP
The equations for the anode and cathode reactions are in the
they give
proach. When summed
2 H*(aq, 1 M) =2 H*(aq, x M)
which gives
[H* (aq, x M)|_ [H*(aq, x M)]?
[H* (aq, 1 M)]?
(1 м)?
Use this to solve for the unknown [H*] and the pH. Enter the pH value.
pH = 8.3
( Recheck Next (3 of 3)
3rd attempt
Incorrect
Q = [H* (aq, x M)]³/(1 M)², so [H*] =v/(Q M)²)
pH = -log[H*]
Submit Answer
Retry Entire Group
9 more group attempts remaining](https://content.bartleby.com/qna-images/question/0ff146ce-64f3-4ab9-b65e-8c45130e19c5/c306edd2-c6ba-4213-833c-2f9ab2984654/myulhb6_thumbnail.png)
Transcribed Image Text:TUTOR Calculate pH Using the Nernst Equation
A concentration cell consisting of two hydrogen electrodes (PH, = 1 atm), where the cathode is
a standard hydrogen electrode and the anode solution has an unknown pH, has a cell voltage
of 0.186 V. What is the pH in the unknown solution? Assume the temperature of the solutions
is 298 K.
pH =
Submit
Show Approach Hide Tutor Steps
TUTOR STEP
The equations for the anode and cathode reactions are in the
they give
proach. When summed
2 H*(aq, 1 M) =2 H*(aq, x M)
which gives
[H* (aq, x M)|_ [H*(aq, x M)]?
[H* (aq, 1 M)]?
(1 м)?
Use this to solve for the unknown [H*] and the pH. Enter the pH value.
pH = 8.3
( Recheck Next (3 of 3)
3rd attempt
Incorrect
Q = [H* (aq, x M)]³/(1 M)², so [H*] =v/(Q M)²)
pH = -log[H*]
Submit Answer
Retry Entire Group
9 more group attempts remaining
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