Electrode (half-cell) Nernst form (E = E° − (0.0591/n) log ([oxidised]/[reduced]))

jee-mainjee-advancedneet-ug

E = E° − (0.0591/n) log ([oxidised]/[reduced])

What each symbol means

SymbolWhat it stands for
nElectrons in the reduction half-equation
[ox]Activity or concentration term for oxidised species (raised to stoichiometric powers in full Q)
[red]Reduced form term

When to use this

Half-reaction written as reduction; solids omitted from Q.