Which of the following statements about the experimental determination of standa

Question

Which of the following statements about the experimental determination of standard cell potentials is true?

a. Standard cell potentials are determined by setting the activity of all species to one.

b. Standard cell potentials are determined in very dilute solutions and calculating activity coefficients using the Debye–Hückel limiting law.

c. Standard cell potentials are determined in solutions where the activity is near one and calculating activity coefficients using the Debye–Hückel limiting law.

d. Standard cell potentials are determined at 298.15K.

Need Solid Explanation.

Explanation / Answer

We measure standard EMF at STP,

Standard temperature 298.15 K or 25 degree C

standard pressure 1 bar

And we need to keep activity, a = 1.00 for all species.

TRUE statements:

* Standard cell potentials are determined by setting the activity of aal species to one.

* Stnadard cell potentials are determined at 298.15 K

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