In an electrochemical cell, the cell potential is the the reduction potentials of the two half-cells.

Explanation:

An electrochemical cell is a cell in which chemical reactions take place to generate electricity. This is done with the help of oxidation and reduction-half reactions taking place at anode and cathode electrodes.

As a result, a cell potential generates and values of this cell potential can be measured as follows.

          = -

Thus, in an electrochemical cell, the cell potential is the measure of the reduction potentials of the two half-cells.

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