Contrast two voltage waveforms for controlled potential electrolysis and the resulting current vs voltage plots that result. what are the conditions that produce the shapes of the curves and what analytical information can be extracted from each? model the titration of carbonic acid, a diprotic weak acid with pka values of 6.3 and 10.3, with naoh. what are the prominent features of thistitration curve and how can this information be used to extract analytically useful information about the sample?