irreversible reaction

简明释义

不可逆反应

英英释义

例句

1.When a banana ripens, it undergoes an irreversible reaction 不可逆反应 that changes its color and texture.

当香蕉成熟时，它经历了一个不可逆反应 irreversible reaction，改变了它的颜色和质地。

2.When baking a cake, the mixing of ingredients leads to an irreversible reaction 不可逆反应 that changes their state permanently.

在烤蛋糕时，成分的混合会导致一个不可逆反应 irreversible reaction，永久改变它们的状态。

3.Photosynthesis in plants involves several steps, but the overall process can be seen as an irreversible reaction 不可逆反应 under normal conditions.

植物的光合作用涉及多个步骤，但在正常条件下，整体过程可以视为一个不可逆反应 irreversible reaction。

4.The combustion of fuel in an engine is an irreversible reaction 不可逆反应 that releases energy and produces exhaust.

发动机中燃料的燃烧是一个不可逆反应 irreversible reaction，释放能量并产生废气。

5.In a chemical experiment, the formation of rust is an example of an irreversible reaction 不可逆反应 that cannot be reversed easily.

在一次化学实验中，生锈的形成是一个例子，属于不可逆反应 irreversible reaction，无法轻易逆转。

作文

In the study of chemistry, one of the fundamental concepts that students encounter is the notion of a reaction. Reactions can be classified into two main categories: reversible and irreversible. An irreversible reaction refers to a chemical process where the reactants are converted into products, and the products cannot revert back to the original reactants under normal conditions. This characteristic makes irreversible reactions particularly interesting and important in various scientific and industrial applications.To better understand irreversible reactions, consider the example of combustion. When a substance such as wood or gasoline burns, it reacts with oxygen in the air to produce carbon dioxide, water, and heat. This process is a classic example of an irreversible reaction. Once the wood has burned, it cannot be transformed back into its original form. The energy released during this reaction is often harnessed for practical uses, such as heating homes or powering vehicles.Another example of an irreversible reaction is the fermentation process used in baking and brewing. When yeast ferments sugar, it produces alcohol and carbon dioxide. Similar to combustion, this reaction cannot simply be reversed to obtain the original sugar and yeast. Instead, the products of fermentation are utilized to create bread or alcoholic beverages, showcasing how irreversible reactions play a crucial role in everyday life.The implications of irreversible reactions extend beyond just chemical processes; they also have significant environmental and biological consequences. For instance, many metabolic processes in living organisms are irreversible reactions. The breakdown of glucose during cellular respiration is one such example. This process releases energy that cells use to perform various functions, but once glucose is metabolized, it cannot be reformed from the products.In terms of environmental science, understanding irreversible reactions is essential when considering issues such as pollution and waste management. Many pollutants undergo irreversible reactions in the environment, transforming into substances that are harmful or difficult to remove. For example, when plastic waste breaks down in the ocean, it undergoes a series of irreversible reactions that lead to microplastics, which pose a significant threat to marine life.Furthermore, the concept of irreversible reactions is vital in the field of thermodynamics. These reactions often lead to an increase in entropy, a measure of disorder in a system. As systems evolve towards greater disorder, the irreversible reactions contribute to the overall energy balance and stability of chemical processes.In conclusion, the term irreversible reaction signifies a critical aspect of chemical reactions that has profound implications across various fields, including chemistry, biology, and environmental science. By recognizing the nature of irreversible reactions, we can better appreciate the complex interactions that govern our world, from the energy we harness to the ecological challenges we face. Understanding these reactions not only enhances our knowledge of chemistry but also informs our approach to sustainability and environmental stewardship.

在化学研究中，学生们遇到的基本概念之一是反应的概念。反应可以分为两大类：可逆反应和不可逆反应。不可逆反应是指一种化学过程，其中反应物转化为产物，而在正常条件下，产物无法重新转变为原始反应物。这一特性使得不可逆反应在各种科学和工业应用中显得尤为有趣和重要。为了更好地理解不可逆反应，我们可以考虑燃烧的例子。当木材或汽油等物质燃烧时，它与空气中的氧气反应，产生二氧化碳、水和热量。这个过程是经典的不可逆反应示例。一旦木材燃烧，就无法再转变回其原始形态。在这一反应中释放的能量常常被用于实际用途，例如加热房屋或为车辆提供动力。另一个不可逆反应的例子是用于烘焙和酿造的发酵过程。当酵母发酵糖时，它会产生酒精和二氧化碳。与燃烧类似，这一反应不能简单地逆转以获得原始的糖和酵母。相反，发酵的产物被用于制作面包或酒精饮料，展示了不可逆反应在日常生活中的重要作用。不可逆反应的影响不仅限于化学过程；它们在环境和生物方面也具有重要意义。例如，许多生物体内的代谢过程都是不可逆反应。葡萄糖在细胞呼吸过程中被分解就是一个这样的例子。这个过程释放出细胞用于执行各种功能的能量，但一旦葡萄糖被代谢，就无法从产物中重新形成。在环境科学方面，理解不可逆反应对于考虑污染和废物管理等问题至关重要。许多污染物在环境中经历不可逆反应，转变为有害或难以去除的物质。例如，当塑料废物在海洋中降解时，它经历了一系列的不可逆反应，导致微塑料的形成，这对海洋生物构成了重大威胁。此外，不可逆反应的概念在热力学领域也至关重要。这些反应通常导致熵的增加，熵是系统中无序程度的度量。随着系统向更大无序状态演变，不可逆反应有助于化学过程的整体能量平衡和稳定性。总之，术语不可逆反应标志着化学反应的一个关键方面，这在化学、生物学和环境科学等多个领域具有深远的影响。通过认识不可逆反应的性质，我们可以更好地欣赏支配我们世界的复杂相互作用，从我们利用的能量到我们面临的生态挑战。理解这些反应不仅增强了我们对化学的认识，还为我们的可持续发展和环境保护方法提供了信息。