Nernst equation

Nernst Equation is a scientific equation used to find the reduction potential or voltage of an electrochemical cell. It is widely used in cell physiology and neurobiology. It is named after . He was a German chemist who created this equation. 
This equation can be used to check which combination of chemicals will be suitable to construct a powerful electric cell.
Expression.
Nernst Equation:
formula_1
where 
Ecell = Reduction potential or voltage of the electrochemical cell.
E = Standard potential of the cell. It is the reduction potential of the cell or voltage under standard conditions (Temperature = 298 Kelvin, Pressure = 1 bar).
R = Gas constant. It is an important constant used in thermodynamics. Its value is 8.314 J.K-1.mol-1.
T = Temperature of the electrochemical cell in Kelvin.
z = Number of moles of electrons that got transferred when reduction took place.
F  = Faraday constant. It is equal to the charge carried by 1 mole of electrons. Faraday constant = 96,485.3329 s Ampere/mole.
Q = Reaction quotient of the chemical reaction that is driving the cell. 
Equilibrium.
When the reduction potential of a cell = 0 V, it is in equilibrium. At equilibrium, the reaction quotient Q = Keq (equilibrium constant).