Voltammetric reduction of perchloric, phosphork, acetk, and ascorbic acid was investigated under steady-state comlitknr at platinum-and goiddlrk microelectrodes. The ckp.nd.nco of the wave height of proton in perchloric acid on the concentratlon of supporting electrolyte (lithium perchlorate) was compared with the theory for current8 1lmIt.d by migration and dMurlon. The wave height depend8 linearly on hydrog.n ion concentration wlthout and with wpportlng electrolyte up to 0.04 and 0.08 M, respectively. A b , a w t k and ascorbk acids exhibit linear caiibratlon plots with current proportional to concentration of undissociated acid up to 0.1 M. Thk k as would be predlcted for reduction of proton wbwquonl to fad dkrociation of the acid. The fairly wdl-ddhd lknnlng current for dihydrogen phosphate indlcates that weak adds with pK, In excess of 7 are accomible to voltammotrlc investigation.
The electrochemical hydrogen evolution reaction (HER) has often been regarded as a useful model for the ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.117.10.200 Downloaded on 2015-03-14 to IP
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