Abstract
We have investigated the behaviour of hemispherical bubbling platinum electrodes of surface areas 0.02–0.08 cm 2 at different rates of bubble formation. Results are given for an electrode of surface area 0.049 cm 2. It was found that the relationship between the value of the instantaneous current and 1/XXXt was in approximate agreement with the theoretical relationship calculated on the basis of the equation governing spherical diffusion. We have calculated from experimental and theoretical values of the limiting diffusion currents, a value t o for each electrode. This value expresses the difference between experimental and theoretical behaviour.
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