Abstract
The effect of H 2 evolution on the mass-transfer rate of the reduction of K 3Fe(CN) 6 at vertical nickel electrodes was studied. A similar study was carried out on the effect of O 2 evolution on the mass transfer rate of the oxidation of K 4Fe(CN) 6. The variables studied were: rate of gas evolution, electrode height and electrode—diaphragm separation. Calculations were conducted to test the feasibility of using gas evolution as a means for stirring instead of the forced flow method. It was found that gas stirring is an economical way of stirring within the range of current density studied.
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