Pre-protonation of nitrobenzene and p-nitroaniline at the dropping mercury electrode

✍ Scribed by H. Sadek; B.A. Abd-el-Nabey

• Book ID: 103061699
• Publisher: Elsevier Science
• Year: 1972
• Tongue: English
• Weight: 474 KB
• Volume: 17
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(72)80051-3

✦ Synopsis

The polarographic behaviour at the dme of nitrohenzene and pnitroaniline has been studied in cl M NaF solution containing small amounts of HCI (4 x IO-* to I.6 x lo-* M). A pre-wave appears at less negative potentials representing the reduction of the protonated species. The effect of the concentration of HCl, temperature and the concentration of NaF on the height of the pre-wave is investigated. The results indicate that the molecules of nitrobenzene and p-nitroaniline are pre-protonated by two and three H+ ions respectively. R&m&-Etude du comportement polarographique B l%lectrode a goutte de mercure du nitrobenzhne et de lap-nitroaniline dam une solution de NaF 0,l M contenant de faibles quantitbs deHCl(4 x lo-* & 1,6 x lo-' M). Une p&vague apparait & des potentiels plus nbgatifs repr&ntant la reduction de l'esp&e proton&e. On &udie