Reaction of exchange

The coefficient of selectivity (9) a corresponding to the following reaction of exchange... 

Both mechanisms of substitution were confirmed by the data of the very first investigation on the kinetics of interpolymer reactions of exchange 62... 

Other synthetic techniques, described below, are applied to produce pseudohalide complexes, for example reactions of exchange of perchlorate anion to... 

Fio. 9. Activation energy and pre-exponentied factors of reaction of exchange in molecular oxygen on oxides of transition metals. 

For oxides of the second group, the order of reaction of exchange in molecular oxygen is lower than 0.6. This value is likely to be related to... 

Table VIII lists the rates of exchange of molecular oxygen for various films under an oxygen pressure of 0.5 torr. The activities of films subjected to the different treatment with oxygen are very close. The activation energy of exchange is 16.5ztl.5 kcal/mole. The order of the reaction of exchange with respect to oxygen approaches 0.5.

This is very close to the succession of activities with respect to the reaction of exchange in molecular oxygen. 

Fig. 15. Catalytic activity of vanadium pentoxide promoted with sulfates of various alkali metals. Curve 1— reaction of exchange of molecular oxygen curve 2—reaction of oxidation of sulfur dioxide.

The results, recorded in Table 6, demonstrate that rhodium remains the most active metal in the promotion of oxygen migration on the support. Platinum is approximately four times less active than rhodium, and palladium cannot promote, at a measurable rate, the reaction of exchange at 400°C. 

There are two interpretations of how complex compoimds form. According to one, multi-step complex-formation is defined by electrostatic forces, according to another, it is defined by donor-acceptor bonds. The former cause coulombian pull of particles to one another and their polarization. On approach may form donor-acceptor bond. This complex process begins with orientation interaction of individual ions with the H O dipole, i.e., with the process called hydration. Sometimes it is accompanied by the loss or acquisition of moisture ions or OH . Such reactions of exchange... 

The relationship between die maximum output of the reaction of exchange interaction and associative state of equilibrium [9.110] participants follows the Gibbs-Dugem-Margulis equation ... 

Transesterification Reaction of exchange of the organic group R" of an ester R"0-(C0)-R with the organic group R of an alcohol R OH to produce another alcohol R"OH and another... 

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