reaction energy

简明释义

反应能

英英释义

例句

1.In a chemical reaction, the amount of reaction energy 反应能量 released can determine how fast the reaction occurs.

在化学反应中，释放的 反应能量 反应能量 的多少可以决定反应的速度。

2.Understanding the reaction energy 反应能量 profile helps chemists predict the feasibility of a reaction.

理解 反应能量 反应能量 曲线有助于化学家预测反应的可行性。

3.Catalysts work by lowering the required reaction energy 反应能量, making reactions occur more quickly.

催化剂通过降低所需的 反应能量 反应能量 来加快反应的发生。

4.The reaction energy 反应能量 of combustion reactions is usually very high, resulting in significant heat production.

燃烧反应的 反应能量 反应能量 通常非常高，导致显著的热量产生。

5.The reaction energy 反应能量 needed to break chemical bonds is often greater than that released when new bonds form.

打破化学键所需的 反应能量 反应能量 通常大于形成新键时释放的能量。

作文

In the field of chemistry, the term reaction energy refers to the amount of energy absorbed or released during a chemical reaction. Understanding reaction energy is crucial for chemists as it helps them predict whether a reaction will occur spontaneously and how much energy will be involved. The concept of reaction energy is closely tied to the laws of thermodynamics, particularly the first law, which states that energy cannot be created or destroyed, only transformed from one form to another. When a chemical reaction takes place, bonds between atoms are broken and formed. This process requires energy input to break the bonds in the reactants, which is known as the activation energy. Once the reaction begins, energy may be released as new bonds are formed in the products. The difference between the energy required to break the bonds and the energy released when new bonds are formed determines the overall reaction energy of the process. For example, consider the combustion of methane (CH4). When methane burns in the presence of oxygen, it produces carbon dioxide and water while releasing a significant amount of energy in the form of heat and light. In this case, the reaction energy is negative, indicating that the reaction releases energy to the surroundings, making it an exothermic reaction. Conversely, some reactions require energy input to proceed, such as the electrolysis of water. In this endothermic reaction, energy must be supplied to break the bonds of the water molecules, resulting in a positive reaction energy. The concept of reaction energy is not only important in academic settings but also has practical applications in various industries. For instance, understanding the reaction energy associated with different chemical processes can help engineers design more efficient reactors in chemical manufacturing. It can also aid in the development of batteries and fuel cells, where controlling the energy output is essential for optimal performance. In addition, the study of reaction energy plays a vital role in environmental science. By analyzing the energy changes in chemical reactions, scientists can assess the impact of various substances on the environment. For example, understanding the reaction energy of pollutants can help in developing strategies to mitigate their effects. Furthermore, the concept of reaction energy extends beyond chemistry into fields such as biology and physics. In biochemistry, for example, enzymes lower the activation energy required for biochemical reactions, thus influencing the reaction energy of metabolic processes in living organisms. In physics, the principles of reaction energy can be applied to understand nuclear reactions and energy transformations in physical systems. In conclusion, reaction energy is a fundamental concept in chemistry that encompasses the energy changes occurring during chemical reactions. Its understanding is crucial for predicting reaction behavior, optimizing industrial processes, and addressing environmental challenges. As we continue to explore the intricacies of chemical reactions, the importance of reaction energy will only grow, highlighting its relevance across multiple scientific disciplines.

在化学领域，术语反应能量指的是在化学反应过程中吸收或释放的能量。理解反应能量对化学家至关重要，因为它帮助他们预测反应是否会自发发生以及涉及多少能量。反应能量的概念与热力学定律密切相关，特别是第一定律，该定律指出能量不能被创造或摧毁，只能从一种形式转化为另一种形式。当化学反应发生时，原子之间的键被打破和形成。这个过程需要输入能量来打破反应物中的键，这被称为活化能。一旦反应开始，形成新键时可能会释放能量。打破键所需的能量与形成新键时释放的能量之间的差异决定了该过程的总体反应能量。例如，考虑甲烷（CH4）的燃烧。当甲烷在氧气存在下燃烧时，它产生二氧化碳和水，同时释放出大量的能量，以热和光的形式表现出来。在这种情况下，反应能量为负，表明反应向周围环境释放能量，使其成为放热反应。相反，一些反应需要能量输入才能进行，例如水的电解。在这个吸热反应中，必须提供能量以打破水分子的键，从而导致正的反应能量。反应能量的概念不仅在学术界重要，还在各个行业中具有实际应用。例如，理解不同化学过程的反应能量可以帮助工程师设计更高效的化学反应器。在电池和燃料电池的开发中，控制能量输出对于最佳性能至关重要。此外，对反应能量的研究在环境科学中也发挥着重要作用。通过分析化学反应中的能量变化，科学家可以评估各种物质对环境的影响。例如，了解污染物的反应能量可以帮助制定减轻其影响的策略。此外，反应能量的概念不仅限于化学，还扩展到生物学和物理学等领域。例如，在生物化学中，酶降低生化反应所需的活化能，因此影响生命体内代谢过程的反应能量。在物理学中，反应能量的原理可以应用于理解核反应和物理系统中的能量转化。总之，反应能量是化学中的一个基本概念，涵盖了化学反应中发生的能量变化。理解这一点对于预测反应行为、优化工业过程和应对环境挑战至关重要。随着我们继续探索化学反应的复杂性，反应能量的重要性只会增加，突显其在多个科学学科中的相关性。