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Velocidade de Reação
The rate of reaction is the change in the amount of a reactant or product per unit time. Reaction rates are therefore determined by measuring the…
Medição das Velociades de Reação
Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a…
Concentração e Lei da Velocidade
The rate of a reaction is affected by the concentrations of reactants. Rate laws (differential rate laws) or rate equations are mathematical…
Determinação da Ordem de Reação
Rate laws describe the relationship between the rate of a chemical reaction and the concentration of its reactants. In a rate law, the rate constant…
A Lei da Velocidade Integrada: A Dependência da Concentração em Relação ao Tempo
While the differential rate law relates the rate and concentrations of reactants, a second form of rate law called the integrated rate law relates…
Meia-vida de uma Reação
The half-life of a reaction (t1/2) is the time required for one-half of a given amount of reactant to be consumed. In each succeeding half-life, half…
Dependência da Temperatura em Relação à Velocidade de Reação
The Collision Theory Atoms, molecules, or ions must collide before they can react with each other. Atoms must be close together to form chemical…
Equação de Arrhenius
The Arrhenius equation relates the activation energy and the rate constant, k, for chemical reactions. In the Arrhenius equation, k = Ae−Ea/RT,…
Mecanismos de Reação
Chemical reactions often occur in a stepwise fashion, involving two or more distinct reactions taking place in a sequence. A balanced equation…
Passos Determinantes da Velocidade
Relating Reaction Mechanisms In a multistep reaction mechanism, one of the elementary steps progresses significantly slower than the others. This…
Catálise
The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being…
Enzimas
Inside living organisms, enzymes act as catalysts for many biochemical reactions involved in cellular metabolism. The role of enzymes is to reduce…
Biomassa para Produção de hidrocarboneto líquido combustível Via Hot-vapor filtrada pirólise rápida e Catalytic Hidrotratamento
Lignocellulosic biomass conversion to produce biofuels has received significant attention because of the quest for a replacement for fossil fuels.…
Reações da cascata enzimática para a síntese de álcoois quirais de Amino de L-lisina
Amino alcohols are versatile compounds with a wide range of applications. For instance, they have been used as chiral scaffolds in organic synthesis.…
Fluxo contínuo de química: Reação de Diphenyldiazomethane com o ácido <em>p</em>- Nitrobenzoic
Continuous flow technology has been identified as instrumental for its environmental and economic advantages leveraging superior mixing, heat…

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