Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Nitrobenzene, Voltaic cells

Every liquid interface is usually electrified by ion separation, dipole orientation, or both (Section II). It is convenient to distinguish two groups of immiscible liquid-liquid interfaces water-polar solvent, such as nitrobenzene and 1,2-dichloroethane, and water-nonpolar solvent, e.g., octane or decane interfaces. For the second group it is impossible to investigate the interphase electrochemical equilibria and the Galvani potentials, whereas it is normal practice for the first group (Section III). On the other hand, these systems are very important as parts of the voltaic cells. They make it possible to measure the surface potential differences and the adsorption potentials (Section IV). [Pg.17]

Recent progress and main problems of the study of electrochemical equilibrium properties are reviewed for interfaces between two immiscible liquid electrolyte solutions. The discussed properties are mainly described in terms of the Galvani, Volta, zero charge, and surface (dipolar) potentials at the liquid-liquid interfaces and free liquid surfaces. Different galvanic and voltaic cells with liquid-liquid, mainly water-nitrobenzene interfaces, are described. These interfaces may be polarizable or reversible with respect to one or several ions simultaneously. [Pg.77]

With the same view Mine and Koczorowski formulated the concept of voltaic cells with a hquid interface and measured a number of differences of distribution potentials in the water-nitrobenzene system [68-70] (see also Sects. 4 and 5). It should be noted that numerous investigations of this type were also performed by Kamiehski et al. [71-73], and in particular by Frumkin, Boguslavsky, and Gugeshashvili with coworkers [74-78]. [Pg.81]

Equations [35] was verified in Refs. [69-78] with the use of voltaic cells (Sect. 5). Boguslavsky et al. also employed galvanic cells for direct measurements of the distribution potentials of two electrolytes using a salt bridge containing TEAPi in nitrobenzene [74,76] these were as follows ... [Pg.90]

The Volta potential, A ip(MX), can also be considered in the case of immiscible electrolyte solutions, e.g. for the nonpolarizable water-nitrobenzene interface in the state of distribution equihbrium of the MX electrolyte (Fig. 1). The above potential can be operationally defined as the compensating voltage of the voltaic cell [163] ... [Pg.99]

Another proposed procedure of finding the ionic data is the application of a special salt bridge, which provides practically constant or negligible liquid junction potentials. The water-nitrobenzene system, containing tetraethylammonium picrate (TEAPi) in the partition equilibrium state, has been proposed as a convenient liquid junction bridge for the liquid voltaic and galvanic cells. [Pg.30]


See other pages where Nitrobenzene, Voltaic cells is mentioned: [Pg.19]    [Pg.33]   
See also in sourсe #XX -- [ Pg.33 , Pg.35 , Pg.45 , Pg.47 ]




SEARCH



Nitrobenzene

Nitrobenzene nitrobenzenes

Voltaic cell

© 2024 chempedia.info