What does n represent in nernst equation

Solution -
Nernst Equation is an equation that relates the reduction potential of an electrochemical reaction (half-celll or full cell reaction) to the standard electrode potential, temperature, and activities (often approximated by concentrations) of the chemical species undergoing reduction and oxidation. It is the most important equation in the field of electrochemistry. 
The equation is E=E°-RTnFln Qc
where E = cell potential (V) under specific conditions

           E°= cell potential at standard conditions
           R = ideal gas constant = 8.314 J/mol-K
           T
 = Temperature (Kelvin), which is generally 25°C (298 K)
           n = number of moles of electrons transferred in the balanced equation

F = Faraday's constant, the charge on a mole of electrons = 95,484.56 C/mol
lnQc= the natural log of the reaction quotient at the moment in time

The equation can be simplified and put up as 
ECell=E°Cell-0.059nlog10Qwhere Q is equilbrium constant of a reaction and given by Q=Conc. of ProductsConc. of Reactants

 

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