Molar conductivity definition

Mohr procedure exptl. details of, 349, 351 Molar absorption coefficient 649 Molar conductivity 520 Molar extinction coefficient see Molar absorption coefficient Molar solution definition, 260 Molarity 259 Mole 259... 

The molar conductivity is the conductivity the solution would have if there were one mole of the substance in one cubic metre of the solution. Combining this definition with Eq. (31.23), we obtain... 

We are now ready to obtain the final equation for the molar conductance. According to Ohm s law the current density due to j ions is jj = OjX = ZjFcWi, where is the conductivity of the solution due to the j ionic species, and F is the Faraday. Besides, by definition... 

Equation (80), following from the definition of molar conductivity Aock/c [Eq. (55)], shows that maximum specific conductivity /Cmax is attained at a concentration /i, at which dK equals zero. 

Recall that the mobility terms are, by definition, positive for cations and negative for anions. Some further relations are required to complete our definitions of transference nnmbers (4). The molar conductivity. A, of a solution is defined as... 

Definitive measurements by fundamental quantities complemented by an empirical factor, e.g. titre (titrimetry), as well as by well-known empirical (transferable) constants like molar absorption coefficient (spectrophotometry), Nernst factor (potentiometry, ISE), and conductivity at definite dilution (conductometry)... 

The transport number has been defined in Section 9.1 as the fraction of the total current carried by a given ion. This is the definition most useful to the determination of transport numbers from emfs. In Chapter 11 the transport number is defined in terms of ionic mobilities, and/or individual molar ionic conductances (see Section 11.17), which are more directly linked to the methods described in that chapter. 

All the experiments were conducted with the same amount of active metal (0.54 mg Pd) at 40 °C and at a H2-partial pressure of SOOmmHg. The molar ratio of Pd to the substrate was 1 2070. It was shown that catalysts, the functional groups of which decreased the retention time of the substrate in the polymer matrix or enhanced the substrate solubility in the polymer matrix, catalyzed the hydrogenation of styrene more effectively. Such catalyst types included Jt-acceptor or hydrophobic supports. During the hydrogenation of allyl acrylate of the polar substrate model, the catalytic activity depended on both the -acceptor and polar properties of the polymeric supports. Thus, a definite relationship was determined between properties of functional groups and the respective polymers. 

The predicted values of Ath agree as weU as may be expected with modem experimental values. The values of at the corresponding temperature of 1.1 r , are also shown in Table 3.21, and those for the aUcali metal halides depend reciprocally on the molar mass of the salt Ath(l l m)/W m K 35/ (M/g mol ), but this cannot be generalized to other salts. A reciprocal dependence on the mass of the molten salts (a fractional power of it) was also noted by Cornwell [278] for 13 salts other than alkali metal halides at temperatures near T. DiGuilio and Teja [279] reviewed several models for the thermal conductivity of molten salts, and later Hossain et al. [280] employed essentially the same model as in [279] to obtain the reduced thermal conductivity 2th, but without a clear definition how is related to the measured thermal conductivity. 

Picquet-Varrault et al. (2002) have conducted a product study of the OH-radical-initiated oxidation of iso-butyl acetate in 1 atm. of air at 298 K in the presence of NOjt. Picquet-Varrault et al. (2002) reported the following products (molar yields) acetone (0.78 0.12), formic acetic anhydride (0.52 0.06), acetoxyacetaldehyde (0.18 0.06), acetic acid (0.08 0.02), acetaldehyde (<0.07), and acetoxyacetone (<0.02). As noted by Picquet-Varrault et al. (2002), because most of the observed products do not provide definite markers for the occurence of a specific reaction pathway, it is difficult to constract a precise oxidation mechanism. For example. 

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