Answer
In 1887, Walther Nernst formulated his celebrated equation, a cornerstone of electrochemistry. This equation elucidates the relationship between the electromotive force (EMF) of a galvanic cell and the concentrations of the reactants and products involved in the electrochemical reaction. Nernst's equation provides a quantitative understanding of the electrochemical potential of a cell and enables the prediction of the direction and extent of redox reactions.