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LeChatelier—Braun principle

In this chapter, the diverse coupling constants and MEC components identified in the combined electronic-nuclear approach to equilibrium states in molecules and reactants are explored. The reactivity implications of these derivative descriptors of the interaction between the electronic and geometric aspects of the molecular structure will be commented upon within both the EP and EF perspectives. We begin this analysis with a brief survey of the basic concepts and relations of the generalized compliant description of molecular systems, which simultaneously involves the electronic and nuclear degrees-of-freedom. Illustrative numerical data of these derivative properties for selected polyatomic molecules, taken from the recent computational analysis (Nalewajski et al., 2008), will also be discussed from the point of view of their possible applications as reactivity criteria and interpreted as manifestations of the LeChatelier-Braun principle of thermodynamics (Callen, 1962). [Pg.456]

They trigger the indirectly coupled, spontaneous relaxations 8N(AQX) and 8Q/AN), which also act toward diminishing the directly coupled forces A/jb(AN) > 0 and AFX(AQX) > 0, in accordance with the LeChatelier-Braun principle (Callen, 1962) ... [Pg.470]

The simple statement of the LeChatelier-Braun principle given in Sec. 13.1 leads one to expect that if the concentration of a reactant were increased, the reaction would proceed so as to consume the added reactant. This, however, is not always true. Consider the gas-phase reaction... [Pg.770]

Despite the question whether the equilibrium for the hydration process can occur, there is a factor which facilitates the reaction course, namely the decreased concentration of Cl" anions during cisplatin passage from blood (with [Cf] about 100 mM) to a cellular environment (with [Cl ] about 10-80 mM). The chloride concentration further drops down in the cellular nucleus to a value about 4 mM. This forces higher yields of the hydration products, according to LeChatelier-Braun-van Hoffs principle. [Pg.269]

These observations and others on the direction of the shift in equilibrium in response to a given change are usually summarized by a statement referred to as the Principle of LeChatelier and Braun (but also known as the Principle of Moderation or the Principle of Spite ) ... [Pg.736]


See other pages where LeChatelier—Braun principle is mentioned: [Pg.462]    [Pg.765]    [Pg.462]    [Pg.765]   
See also in sourсe #XX -- [ Pg.456 , Pg.462 , Pg.470 ]




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LeChatelier principle

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