It is the same principle as for gas pressure equilibrium, temperature equilibrium, radiation equilibrium, concentration equilibrium. The electrode maintains such a potential, where these rates of the opposite reactions match. The rate of the opposite, reduction reaction, absorbing electrons from the electrode wire, decreases exponentially with raising of the electrode potential. The rate of the oxidation reaction, providing electrons to the electrode wire, increases exponentially with raising of the electrode pontential. If a particular system ( like the particular lead acid half-cell ) is in equilibrium, so macroscopically "nothing happens", there is ongoing dynamic equilibrium. Note that at molecular/atomic level, there is no such a thing like being idle. Or do they just hang out nearby the plates? So, what may the electrons be doing at this time?ĭo they just stay in their actual elements till a wire is connected so they can move out? Half reaction of the redox describes what happens during discharge at the anode where the circuit is about to make most of the electrons necessary for the upcoming load but it does not show the instant of the state of electrons just before discharge: I am only referring to the instant of time just before the whole redox reaction. Update: I am not referring to the instant of time between both half reactions. There is no intention to look for a Quantum Mechanics answer.Say more specifically when the lead acid battery is 100% charged and just before we begin to have an intentional discharge on it.But, what do electrons usually do when lead acid battery is idle? And why? Lead acid batteries operation are governed by Redox reactions for charging and discharging.
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