Cell Potential Formula

The driving force of the electron flow from anode to cathode shows a potential drop in the energy of the electrons moving into the wire.  The difference in potential energy between the anode and cathode is known as the cell potential in a voltaic cell.

The formula for cell potential is

Cell potential formula

Problem 1: A concentration cell was created by immersing two silver electrodes in 0.05M and 0.1M AgNO3 solution. Write cell representation, cell reactions and find the EMF of the concentration cell.

Answer:

The cell representation:

Cell reaction

The cell reactions:

Angular momentum Fomula 5

Angular momentum Fomula 6

To find the EMF of a concentration element, you must use the following formula:

EMF of concentration cell

c1>c2

Therefore,E = 0.08 V

 

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