active mass

简明释义

有效质量

英英释义

例句

1.To calculate the equilibrium constant, you need to know the active mass (活性质量) of each component in the reaction.

要计算平衡常数，您需要了解反应中每个组分的active mass（活性质量）。

2.In enzyme kinetics, the active mass (活性质量) of the substrate is crucial for determining the reaction rate.

在酶动力学中，底物的active mass（活性质量）对确定反应速率至关重要。

3.The concept of active mass (活性质量) helps in understanding how catalysts affect reaction rates.

active mass（活性质量）的概念有助于理解催化剂如何影响反应速率。

4.The active mass (活性质量) of a substance can change with temperature and pressure.

物质的active mass（活性质量）可以随温度和压力变化。

5.In a chemical reaction, the rate depends on the concentration of the reactants, known as the active mass (活性质量).

在化学反应中，反应速率取决于反应物的浓度，称为active mass（活性质量）。

作文

In the field of chemistry, the concept of active mass plays a crucial role in understanding chemical reactions. The term active mass refers to the effective concentration of a reactant or product in a chemical reaction, which influences the rate at which the reaction occurs. This idea is central to the study of reaction kinetics, where scientists seek to understand how various factors affect the speed of chemical processes.To illustrate the significance of active mass, consider the example of a simple reaction between hydrogen and oxygen to form water. The reaction can be represented as: 2H₂ + O₂ → 2H₂O. In this case, the active mass of each reactant is determined by its concentration in the reaction mixture. If the concentration of hydrogen is increased while keeping the concentration of oxygen constant, the active mass of hydrogen increases, leading to a faster reaction rate. This demonstrates how manipulating the active mass of reactants can influence the overall kinetics of the reaction.Furthermore, the concept of active mass is not limited to gases; it also applies to solutions and solids. For instance, in a solution, the active mass is directly related to the molarity of the solute. In solid-state reactions, the surface area of the solid can affect the active mass, as only the particles on the surface are available to react. This highlights the versatility of the concept across different states of matter.The relationship between active mass and reaction rates is often described by the law of mass action, which states that the rate of a reaction is proportional to the product of the active masses of the reactants raised to their respective stoichiometric coefficients. This law provides a mathematical framework for predicting how changes in concentration will affect the speed of a reaction, allowing chemists to design experiments and industrial processes more effectively.Moreover, understanding active mass is essential for various applications, including catalysis, where catalysts work by providing an alternative pathway for a reaction with a lower activation energy. By increasing the active mass of the reactants involved, catalysts can significantly enhance the rate of reaction without being consumed in the process. This principle is widely utilized in the production of chemicals, pharmaceuticals, and fuels, making it a key concept in both academic research and industrial applications.In conclusion, the concept of active mass is fundamental to the study of chemical kinetics and plays a vital role in understanding how reactions occur. By recognizing the importance of active mass in influencing reaction rates, chemists can manipulate conditions to optimize chemical processes. Whether in a laboratory setting or an industrial environment, the principles surrounding active mass continue to be integral to advancements in the field of chemistry, ultimately contributing to the development of new materials and technologies that benefit society as a whole.

在化学领域，活性物质的概念在理解化学反应中起着至关重要的作用。术语活性物质指的是化学反应中反应物或产物的有效浓度，它影响反应发生的速率。这个思想是反应动力学研究的核心，科学家们寻求理解各种因素如何影响化学过程的速度。为了说明活性物质的重要性，可以考虑氢和氧之间的简单反应以形成水的例子。该反应可以表示为：2H₂ + O₂ → 2H₂O。在这种情况下，每个反应物的活性物质由其在反应混合物中的浓度决定。如果在保持氧浓度不变的情况下增加氢的浓度，则氢的活性物质增加，从而导致反应速率加快。这表明操纵反应物的活性物质可以影响反应的整体动力学。此外，活性物质的概念不仅限于气体；它也适用于溶液和固体。例如，在溶液中，活性物质与溶质的摩尔浓度直接相关。在固态反应中，固体的表面积可以影响活性物质，因为只有表面的颗粒可以参与反应。这突显了该概念在不同物质状态下的多样性。活性物质与反应速率之间的关系通常通过质量作用定律来描述，该定律指出反应速率与反应物的活性物质乘积成正比，并且乘以各自的化学计量系数。该定律提供了一个数学框架，用于预测浓度变化将如何影响反应速度，使化学家能够更有效地设计实验和工业过程。此外，理解活性物质对于各种应用至关重要，包括催化，其中催化剂通过提供具有较低活化能的替代反应途径来工作。通过增加参与反应的活性物质，催化剂可以显著提高反应速率，而不会在过程中被消耗。这一原理被广泛应用于化学品、药物和燃料的生产，使其成为学术研究和工业应用中的关键概念。总之，活性物质的概念是化学动力学研究的基础，对于理解反应如何发生至关重要。通过认识到活性物质在影响反应速率方面的重要性，化学家可以操控条件以优化化学过程。无论是在实验室环境还是工业环境中，围绕活性物质的原则继续在化学领域的进步中发挥重要作用，最终促进新材料和技术的发展，造福全社会。