Grotthus' chain theory

Grotthus' chain theory

[′grōt·hu̇s ′chān ‚thē·ə·rē]
(physical chemistry)
An early theory used to explain the conductivity of an electrolyte, in which it was assumed that the cathode and anode attract hydrogen and oxygen respectively, and the molecules of the electrolyte are stretched out in chains between the electrodes, with decomposition occurring in molecules closest to the electrodes.