Assessment of linearity between steady-state limiting current and analytical concentration of weak acids in the reaction of hydrogen evolution
✍ Scribed by Salvatore Daniele; M.Antonietta Baldo; Francesco Simonetto
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 559 KB
- Volume
- 331
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
✦ Synopsis
The reaction of hydrogen evolution from the acids: hydrochloric, hydrogen sulfate ion, monochloroacetic and lactic have been studied by steady-state voltammetry at platinum microdisc electrodes. From the experimental voltammetric parameters, such as half-wave potential, (E 1,4-E& values and steady-state limiting current, it has been ascertained that the second order CE mechanism, involved in the discharge of protons arising from the weak acids investigated, is characterized by a chemical reaction which is fast over the whole concentration range explored. Theoretical calibration plots have been examined in the concentration range 1 x 1O-6 -1 x 10-l M and the zone over which linearity exists has been verified both from a theoretical and experimental point of view.