CBSE · Class 12 · Chemistry · ElectrochemistryState Nernst equation for a general electrode reaction.

The Nernst equation establishes a fundamental mathematical relationship that allows the precise calculation of the actual electrode potential under non-standard conditions of concentration and temperature. For a general reduction half-reaction represented as Mn+ + ne- converting to M(s), the Nernst equation is mathematically expressed as E equals E-zero minus (RT over nF) multiplied by the natural logarithm of the reciprocal of the molar concentration of metal ions, or alternatively using base-10 logarithm with standard constant values substituted accordingly for practical electrochemical calculations.