what is the difference among E0cell , Ecell, emf and potential difference....explain
E0cell is the standard electrode potential of cell i.e potential under standard condition when concentration of all the ions (oxidised and reduced form) is unity and temperature is 298 K.
Ecell is the cell potential under normal condition . It is calculated by Nernst equation and give dependence of Ecell on concentration and temperature.
Ecell = E0cell – RT/nF (ln [product]/[reactant])
The electromotive force (EMF) is the maximum potential difference between two electrodes of a galvanic or voltaic cell. thus EMF = Ecell
In terms of electrochemical cells EMF is not very much different from potential difference.
Ecell is the cell potential under normal condition . It is calculated by Nernst equation and give dependence of Ecell on concentration and temperature.
Ecell = E0cell – RT/nF (ln [product]/[reactant])
The electromotive force (EMF) is the maximum potential difference between two electrodes of a galvanic or voltaic cell. thus EMF = Ecell
In terms of electrochemical cells EMF is not very much different from potential difference.