Question

write Nernst equation for electromotive force for Galvanic cell.

Answer 1

Electrochemistry deals with cell potential as well as energy of chemical reactions. The energy of a chemical system drives the charges to move, and the driving force give rise to the cell potential of a system called galvanic cell. The energy aspect is also related to the chemical equilibrium. All these relationships are tied together in the concept of Nearnst equation.
R T [C]c [D]d
DE = DE° - ----- ln ---------
n F [A]a [B]b
This is known as the Nernst equation. The equation allows us to calculate the cell potential of any galvanic cell for any concentrations.

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#Ratnesh