Bubble coverage and bubble resistance using cells with horizontal electrode

The resistivity ratio due to gas bubbles underneath horizontal anodes in el ectrolytic cells was measured and compared with that in an air-water model of identical geometry. It was found that at equal current density or equiva lent gas generation rate, the difference in the bubble resistivity ratio be tween these two situations can be up to 20%. Consequently, the results obta ined from an air-water model cannot be directly applied to an electrolytic cell. Results also showed that within the range of experimental conditions covered, the bubble resistivity ratios obtained for a given anode-cathode d istance in both cells are linearly related to the bubble coverage ratio, ba sed on bubbles greater than a certain size as limited by the measurement me thod.