Question5. Calculate the activity coefficients of sodium and chloride ions for a 0.04 M NaCl solution
6. What is an electrode of the first kind? Write a general Nernst equation for this indicator electrode.
7. A solution of and has a pH of 2.0 . What is the of this half-cell?
Studdy Solution
Use the Nernst equation to find the cell potential ().
The Nernst equation is given by:
Where:
- is the cell potential.
- is the standard reduction potential.
- is the universal gas constant ().
- is the temperature in Kelvin ().
- is the number of moles of electrons transferred in the reaction ( for this reaction).
- is Faraday's constant ().
- is the reaction quotient.
Calculate :
Given:
-
-
- (from pH = 2)
Calculate :
The of this half-cell is approximately .
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