rate of reaction

简明释义

反应速度

英英释义

例句

1.The rate of reaction in this chemical process can be increased by raising the temperature.

在这个化学过程中，提升温度可以加快反应速率。

2.The rate of reaction decreases as the concentration of reactants diminishes over time.

随着反应物浓度随时间减少，反应速率也会降低。

3.To optimize production, we need to monitor the rate of reaction closely.

为了优化生产，我们需要密切监测反应速率。

4.Scientists are studying the rate of reaction between these two compounds to understand their interaction better.

科学家们正在研究这两种化合物之间的反应速率以更好地理解它们的相互作用。

5.A catalyst can significantly increase the rate of reaction in many chemical reactions.

催化剂可以显著提高许多化学反应的反应速率。

作文

The concept of the rate of reaction is fundamental in the field of chemistry, as it describes how quickly a chemical reaction occurs. Understanding the rate of reaction is essential for chemists and scientists who seek to manipulate reactions for various applications, from industrial manufacturing to drug development. The rate of reaction can be influenced by several factors, including temperature, concentration, surface area, and the presence of catalysts. To illustrate, consider a simple reaction between vinegar and baking soda. When these two substances are mixed, they react vigorously, producing carbon dioxide gas. The speed at which this gas is produced is an example of the rate of reaction. If we increase the temperature of the vinegar, we will notice that the reaction occurs more rapidly. This is because higher temperatures provide more energy to the molecules involved, allowing them to collide more frequently and with greater force, thus increasing the rate of reaction. Another factor that affects the rate of reaction is the concentration of the reactants. In our vinegar and baking soda example, if we use a larger amount of baking soda while keeping the vinegar constant, the rate of reaction will also increase. This occurs because there are more baking soda molecules available to collide with the vinegar molecules, leading to a higher frequency of reactions. Surface area plays a crucial role as well. For instance, powdered substances react faster than larger chunks due to the increased surface area that is exposed to the other reactant. If we were to use a solid block of baking soda instead of powder, the rate of reaction would be significantly slower. This principle is often utilized in industries where powdered forms of reactants are preferred to enhance the rate of reaction. Catalysts are another important aspect of the rate of reaction. A catalyst is a substance that increases the rate of reaction without being consumed in the process. For example, in the decomposition of hydrogen peroxide, the addition of manganese dioxide acts as a catalyst and significantly speeds up the rate of reaction, allowing for quicker production of oxygen gas. This property of catalysts is invaluable in many chemical processes, as it allows for more efficient reactions and lower energy costs. In summary, the rate of reaction is a critical concept in understanding how chemical reactions occur and how they can be manipulated for various purposes. By studying the factors that influence the rate of reaction, scientists can optimize conditions to achieve desired outcomes in both laboratory and industrial settings. Whether it is through adjusting temperature, concentration, surface area, or using catalysts, mastering the rate of reaction is key to advancing our knowledge and capabilities in chemistry.

反应速率的概念在化学领域中是基础性的，因为它描述了一种化学反应发生的速度。理解反应速率对于那些希望操控反应以满足各种应用需求的化学家和科学家来说至关重要，从工业制造到药物开发都需要这一知识。反应速率可以受到多个因素的影响，包括温度、浓度、表面积和催化剂的存在。举个例子，考虑醋和小苏打之间的简单反应。当这两种物质混合时，它们会剧烈反应，产生二氧化碳气体。气体产生的速度就是反应速率的一个例子。如果我们提高醋的温度，我们会注意到反应发生得更快。这是因为较高的温度为参与反应的分子提供了更多的能量，使它们能够更频繁、更有力地碰撞，从而提高反应速率。影响反应速率的另一个因素是反应物的浓度。在我们的醋和小苏打的例子中，如果我们使用更多的小苏打而保持醋不变，反应速率也会增加。这是因为有更多的小苏打分子可以与醋分子碰撞，从而导致反应的频率增加。表面积也起着关键作用。例如，粉末状物质比大块物质反应得更快，因为它们与其他反应物接触的表面积更大。如果我们使用一块固体小苏打而不是粉末，反应速率将显著减慢。这一原理在许多工业中被利用，粉末形式的反应物更受欢迎，以增强反应速率。催化剂是影响反应速率的另一个重要方面。催化剂是一种在反应过程中增加反应速率而不被消耗的物质。例如，在过氧化氢的分解过程中，加入二氧化锰作为催化剂会显著加快反应速率，从而更快地产生氧气。这种催化剂的特性在许多化学过程中是无价的，因为它允许更高效的反应和更低的能耗。总之，反应速率是理解化学反应如何发生及如何操控这些反应以实现各种目的的关键概念。通过研究影响反应速率的因素，科学家可以优化条件，以在实验室和工业环境中实现预期结果。无论是通过调整温度、浓度、表面积，还是使用催化剂，掌握反应速率对于推动我们在化学领域的知识和能力至关重要。