limiting concentration

简明释义

极限浓度

英英释义

例句

1.The limiting concentration 限制浓度 of this drug in the bloodstream is crucial for effective treatment.

这种药物在血液中的限制浓度 限制浓度对有效治疗至关重要。

2.To ensure safety, the limiting concentration 限制浓度 for airborne pollutants must be strictly adhered to.

为了确保安全，必须严格遵守空气污染物的限制浓度 限制浓度。

3.The study found that the limiting concentration 限制浓度 of the chemical in water was lower than previously thought.

研究发现，该化学物质在水中的限制浓度 限制浓度低于之前的估计。

4.Researchers are investigating the limiting concentration 限制浓度 of nutrients required for optimal plant growth.

研究人员正在调查植物生长所需的最佳营养的限制浓度 限制浓度。

5.During the experiment, we monitored the limiting concentration 限制浓度 of the solution at various temperatures.

在实验过程中，我们监测了不同温度下溶液的限制浓度 限制浓度。

作文

In the field of chemistry, the concept of limiting concentration plays a crucial role in understanding chemical reactions and their dynamics. The term limiting concentration refers to the maximum concentration of a reactant that can be present in a solution before it starts to limit the rate of the reaction. This concept is particularly important in reactions that involve multiple reactants, where one reactant may become depleted faster than others, thus controlling the overall reaction rate.To illustrate this, consider a simple reaction between two substances, A and B, represented by the equation: A + B → C. If we start with a high concentration of A but a low concentration of B, the reaction will proceed until all of B is consumed. At this point, the concentration of B has reached its limiting concentration, and the reaction will stop, even if there is an excess of A remaining. Therefore, understanding the limiting concentration of each reactant is essential for predicting the behavior of the reaction and optimizing conditions for maximum yield.Moreover, the concept of limiting concentration is not only applicable in laboratory settings but also in industrial processes. For instance, in the production of chemicals, pharmaceuticals, or biofuels, knowing the limiting concentration of raw materials allows chemists and engineers to design more efficient processes. By ensuring that the concentrations of all reactants are balanced, manufacturers can maximize output and minimize waste, leading to both economic and environmental benefits.In addition, the limiting concentration can also be influenced by various factors such as temperature, pressure, and the presence of catalysts. For example, increasing the temperature generally increases the kinetic energy of molecules, which can lead to a higher reaction rate. However, if one reactant reaches its limiting concentration quickly due to its lower initial amount, the increase in temperature may not significantly impact the overall rate of the reaction. This interplay between various factors highlights the complexity of chemical systems and the importance of understanding limiting concentration in both theoretical and practical contexts.Furthermore, the concept of limiting concentration extends beyond traditional chemistry into fields like biochemistry and environmental science. In biological systems, enzymes often have substrates that exhibit limiting concentration characteristics. When substrate levels fall below a certain threshold, enzyme activity can be severely restricted, impacting metabolic pathways and cellular functions. Similarly, in environmental science, pollutants can reach a limiting concentration in ecosystems, beyond which they can cause significant harm to flora and fauna.In conclusion, the concept of limiting concentration is fundamental to the study of chemical reactions and processes. It helps chemists understand how different reactants interact and how to optimize conditions for desired outcomes. Whether in a laboratory setting or an industrial application, recognizing the limiting concentration of reactants can lead to more efficient and sustainable practices. As we continue to explore and innovate in the realms of chemistry and related fields, the understanding of limiting concentration will remain a vital component of our scientific toolkit.

在化学领域，限制浓度的概念在理解化学反应及其动态方面起着至关重要的作用。术语限制浓度指的是在溶液中可以存在的反应物的最大浓度，在此浓度之前，它开始限制反应速率。这个概念在涉及多个反应物的反应中特别重要，其中一个反应物可能比其他反应物耗尽得更快，从而控制整体反应速率。为了说明这一点，考虑两个物质A和B之间的简单反应，用方程表示：A + B → C。如果我们以高浓度的A和低浓度的B开始，反应将进行直到B被消耗殆尽。在这一点上，B的浓度达到了它的限制浓度，反应将停止，即使仍有多余的A。因此，理解每种反应物的限制浓度对于预测反应的行为和优化最大产量的条件至关重要。此外，限制浓度的概念不仅适用于实验室环境，还适用于工业过程。例如，在化学品、药品或生物燃料的生产中，了解原材料的限制浓度使化学家和工程师能够设计更高效的工艺。通过确保所有反应物的浓度平衡，制造商可以最大化产出并最小化浪费，从而带来经济和环境的双重利益。此外，限制浓度也会受到温度、压力和催化剂存在等各种因素的影响。例如，增加温度通常会增加分子的动能，这可能导致反应速率提高。然而，如果由于初始量较少，一个反应物很快达到其限制浓度，那么温度的升高可能不会显著影响反应的整体速率。这些因素之间的相互作用突显了化学系统的复杂性，以及在理论和实践背景下理解限制浓度的重要性。此外，限制浓度的概念超越了传统化学，延伸到生物化学和环境科学等领域。在生物系统中，酶通常具有表现出限制浓度特征的底物。当底物水平低于某个阈值时，酶的活性可能会受到严重限制，从而影响代谢途径和细胞功能。同样，在环境科学中，污染物在生态系统中可能达到限制浓度，超过该浓度后可能对植物和动物造成重大危害。总之，限制浓度的概念是化学反应和过程研究的基础。它帮助化学家理解不同反应物如何相互作用，以及如何优化条件以获得期望的结果。无论是在实验室环境还是工业应用中，认识到反应物的限制浓度都可以导致更高效和可持续的实践。随着我们继续在化学和相关领域探索和创新，对限制浓度的理解将始终是我们科学工具箱中的重要组成部分。