KINETIC AND THERMODYNAMIC INFORMATION DERIVED FROM ELECTROCHEMICAL MEASUREMENTS ON STATIONARY STATES

Experiments are reported on the electrochemical displacement of the no nlinear minimum bromate reaction from stationary states far from equil ibrium and from equilibrium. We measure the Ce-IV/Ce-III electrode pot ential V at a given displacement effected by an imposed current clamp, I. The variation of the excess power (V-V-s)I, where V-s is the elect rode potential at a stationary state, versus the imposed current is of the same form as the time derivative of an excess work, related in pr ior theoretical analyses to the thermodynamics of systems far from equ ilibrium.