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Equilíbrio Dinâmico
A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions.…
A Constante de Equilíbrio
Consider the oxidation of sulfur dioxide: For a reaction that begins with a mixture of reactants only, the product concentration is initially equal…
Equilíbrio para Reações Gasosas e Reações Heterogéneas
Homogeneous Equilibria for Gaseous Reactions For gas-phase reactions, the equilibrium constant may be expressed in terms of either the molar…
Cálculo da Constante de Equilíbrio
The equilibrium constant for a reaction is calculated from the equilibrium concentrations (or pressures) of its reactants and products. If these…
Quociente da Reação
The status of a reversible reaction is conveniently assessed by evaluating its reaction quotient (Q). For a reversible reaction described by m A + n…
Cálculo das Concentrações de Equilíbrio
Being able to calculate equilibrium concentrations is essential to many areas of science and technology—for example, in the formulation and…
A Suposição do x Pequeno
If a reaction has a small equilibrium constant, the equilibrium position favors the reactants. In such reactions, a negligible change in…
O Princípio de Le Chatelier: Alteração da Concentração
A system at equilibrium is in a state of dynamic balance, with forward and reverse reactions taking place at equal rates. If an equilibrium system is…
O Princípio de Le Chatelier: Alteração do Volume (Pressão)
For gas-phase equilibria, changes in the concentrations of reactants and products can occur with altered volume and pressure. The partial pressure,…
O Princípio de Le Chatelier: Alteração da Temperatura
Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any…
Partitioning Metal-silicato em alta pressão e temperatura: Métodos experimentais e um protocolo para suprimir Altamente sidérophile Elemento Inclusões
Estimates of the primitive upper mantle (PUM) composition reveal a depletion in many of the siderophile (iron-loving) elements, thought to result…
Computação de Concentrações Atmosféricas de Aglomerados Moleculares a partir <em>de ab initio</em> Termoquímica
The computational study of the formation and growth of atmospheric aerosols requires an accurate Gibbs free energy surface, which can be obtained…
Recuperação de Amónio Eletroquimicamente e Bioelectrochemically Induzida
Streams such as urine and manure can contain high levels of ammonium, which could be recovered for reuse in agriculture or chemistry. The extraction…

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