Dear Colleagues.
The Faraday constant as a fundamental physical value has its peculiar features, which make it standing out of the other physical constants. According tothe official documents of NIST, this constant has two values:
F = 96485.33289 ± 0.00059 C/mole and
F* = 96485.3251 ± 0.0012 C/mole.
The second value refers to the "ordinary electric current".
Is the Faraday constant constant?
One of the ways to answer this question is proposed in the works.
Preprint ON THE DIFFERENCE OF THE VALUES THE FARADAY CONSTANT
Article WHETHER VALUE OF A CONSTANT FARADAY IS CONSTANT?
Sincerely, Yuriy.
The two quoted values don't seem to differ within the precision they've been assigned. So they do support the statement that this quantity is a constant. The only way to argue that it isn't is to provide a measurement of this quantity that leads to a value that's different from these, within the precision of the measurement.
Αξιότιμε κύριε Νικόλη.
There is another way to prove that it is not.
To do this, it is sufficient to compare the confidence intervals for the values of F given in NIST. In the first case, this interval is [96485.33230; 96485.33348]. The second interval is [96485.3239; 96485.3263]. The intersection of these intervals forms an empty set. Consequently, the two Faraday constants given in NIST do not match. Within the given measurement errors.
Sincerely,
Yuriy.
Faraday's constant is always considered as universal Constant ...
Dear Md. Tarek Hossain.
There are two different methods for determining the Faraday constant. They give different meanings. The difference exceeds the experimental error.
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