active mass

简明释义

有效质量

英英释义

例句

1.In a chemical reaction, the rate depends on the concentration of the active mass 有效质量 of the reactants.

在化学反应中，反应速率取决于反应物的active mass 有效质量浓度。

2.The concept of active mass 有效质量 is crucial in understanding equilibrium in chemical systems.

理解化学系统中的平衡时，active mass 有效质量的概念至关重要。

3.Increasing the active mass 有效质量 of a catalyst can enhance the reaction rate significantly.

增加催化剂的active mass 有效质量可以显著提高反应速率。

4.To calculate the equilibrium constant, you need to know the active mass 有效质量 of all species involved.

要计算平衡常数，你需要知道所有参与物种的active mass 有效质量。

5.The active mass 有效质量 of the product influences the direction of the reaction.

产物的active mass 有效质量影响反应的方向。

作文

In the study of chemistry, particularly in the context of chemical reactions, the concept of active mass plays a crucial role. The term active mass refers to the concentration of a reactant or product in a given volume of solution, which is essential for understanding reaction rates and equilibria. When we discuss chemical reactions, it is important to recognize that not all molecules contribute equally to the reaction process. The active mass indicates how many particles are available to react at any moment, thus influencing the speed and outcome of the reaction.To illustrate this concept further, consider a simple reaction between hydrogen and oxygen to form water. In this case, the active mass of both hydrogen and oxygen will determine how quickly water is produced. If the concentration of hydrogen is high while that of oxygen is low, the reaction may proceed rapidly until the oxygen is consumed. Conversely, if both gases are present in equal concentrations, the rate of formation of water will be more balanced. This interplay of active mass highlights the importance of reactant concentrations in chemical kinetics.Moreover, the concept of active mass extends beyond just concentration. It can also encompass the physical state of the reactants. For example, in heterogeneous reactions where solids, liquids, and gases interact, the active mass may vary significantly based on surface area and other factors. In such cases, the solid's surface area becomes crucial because only the molecules on the surface can participate in the reaction. Thus, increasing the surface area of a solid reactant can effectively increase its active mass, leading to a faster reaction rate.Understanding active mass is also vital for predicting the behavior of systems at equilibrium. According to Le Chatelier's principle, when a system at equilibrium is disturbed, the concentrations of the reactants and products will shift to counteract the change. This shift is directly related to the active mass of the substances involved. For instance, if the concentration of one reactant is increased, the system will adjust by favoring the formation of products until a new equilibrium is established, demonstrating the dynamic nature of active mass in chemical processes.In practical applications, chemists often manipulate the active mass to optimize reaction conditions for industrial processes. By adjusting concentrations, temperature, and pressure, they can maximize yields and minimize costs. For example, in the Haber process for synthesizing ammonia, controlling the active mass of nitrogen and hydrogen is key to achieving higher production rates.In conclusion, the concept of active mass is fundamental to our understanding of chemical reactions and their dynamics. It encompasses not only the concentration of reactants and products but also their physical states and interactions. By mastering the implications of active mass, students and professionals in the field of chemistry can better predict reaction behaviors and optimize conditions for desired outcomes. As chemistry continues to evolve, the significance of active mass will remain a cornerstone of chemical education and research, highlighting the intricate balance of nature's reactions and the science behind them.

在化学研究中，尤其是在化学反应的背景下，活性物质的概念发挥着至关重要的作用。术语活性物质指的是在给定体积溶液中反应物或产物的浓度，这对于理解反应速率和化学平衡是必不可少的。当我们讨论化学反应时，重要的是要认识到并非所有分子对反应过程的贡献是相同的。活性物质表示在任何时刻可用于反应的粒子数量，从而影响反应的速度和结果。为了进一步说明这一概念，考虑氢气与氧气反应生成水的简单反应。在这种情况下，氢气和氧气的活性物质将决定水的生成速度。如果氢气的浓度很高而氧气的浓度很低，那么反应可能会迅速进行，直到消耗掉氧气。相反，如果两种气体的浓度相等，则水的生成速率将更加平衡。这种活性物质的相互作用突显了反应物浓度在化学动力学中的重要性。此外，活性物质的概念不仅限于浓度。它还可以涵盖反应物的物理状态。例如，在固体、液体和气体相互作用的异相反应中，活性物质可能会因表面积和其他因素而显著变化。在这种情况下，固体的表面积变得至关重要，因为只有表面的分子才能参与反应。因此，增加固体反应物的表面积可以有效地增加其活性物质，从而加快反应速率。理解活性物质对于预测平衡系统的行为也至关重要。根据勒沙特列原理，当处于平衡状态的系统受到干扰时，反应物和产物的浓度将发生变化，以抵消这种变化。这种变化直接与所涉及物质的活性物质有关。例如，如果增加一种反应物的浓度，系统将通过促进产物的形成来调整，直到建立新的平衡，展示了活性物质在化学过程中的动态特性。在实际应用中，化学家们常常操控活性物质以优化工业过程的反应条件。通过调整浓度、温度和压力，他们可以最大化产量并最小化成本。例如，在合成氨的哈伯法中，控制氮气和氢气的活性物质是实现更高生产速率的关键。总之，活性物质的概念是我们理解化学反应及其动态的基础。它不仅涵盖反应物和产物的浓度，还包括它们的物理状态和相互作用。通过掌握活性物质的含义，化学领域的学生和专业人士可以更好地预测反应行为并优化期望结果的条件。随着化学的不断发展，活性物质的重要性将继续成为化学教育和研究的基石，突显自然反应的微妙平衡及其背后的科学。