
Ju O.
asked 05/02/23Can someone check my answer for this chem question?
Using the slope of the Nernst regression line, use the formula 2.303RT/nF to solve for the Faraday constant.
The overall balanced reaction is Zn(s)+Cu2+(aq)--> Zn2+(aq)+Cu (s)
The slope is 0.0206
The temperature is 294.15 k
N= 2
For F, I got 136,710 c/mol
The accepted number is 96,485 c/mol so the percent error would be 42%.
Does the answer I got seem correct?
1 Expert Answer

Lori C. answered 07/18/24
Chemistry M.S. Tutor for AP Chemistry, General, and Physical Chemistry
The slope of the Nernst regression line is the term 2.303RT/(nF).
Given that the slope is 0.0206:
2.303RT/(nF) = 0.0206
Plug in the variables except F: n = 2, R = 8.314 J/(mol·K), T = 294.15 K
2.303*8.314*294.15 K/(2*F) = 0.0206
F = 136,500.1 C/mol
Your answer appears correct, with a slight discrepancy due to rounding.
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Anthony T.
I got the same answer as you. Was the slope obtained in an experiment?05/02/23