weak base

简明释义

弱碱

英英释义

例句

1.Ammonia is commonly used as a weak base in household cleaners.

氨水常被用作家庭清洁剂中的弱碱。

2.Sodium bicarbonate acts as a weak base and can neutralize acids.

碳酸氢钠作为一种弱碱，可以中和酸。

3.In chemistry, a weak base does not completely dissociate in solution.

在化学中，弱碱在溶液中不会完全离解。

4.The pH of a solution containing a weak base is typically above 7.

含有弱碱的溶液的pH值通常高于7。

5.When mixed with an acid, a weak base will produce a salt and water.

当与酸混合时，弱碱会产生盐和水。

作文

In the world of chemistry, understanding the concept of a weak base is essential for students and professionals alike. A weak base is defined as a substance that partially ionizes in solution, resulting in a lower concentration of hydroxide ions compared to strong bases. This characteristic makes weak bases significant in various chemical reactions, particularly in acid-base equilibria. For instance, ammonia (NH3) is a common example of a weak base. When dissolved in water, it reacts with water molecules to form ammonium ions (NH4+) and hydroxide ions (OH-), but this reaction does not go to completion, which is a hallmark of weak bases.The importance of weak bases extends beyond the laboratory; they play crucial roles in biological systems as well. For example, the bicarbonate ion (HCO3-) acts as a weak base in the blood, helping to maintain the pH balance necessary for proper physiological function. The ability of weak bases to accept protons (H+) without completely dissociating allows them to buffer solutions, resisting changes in pH when acids or bases are added.Moreover, the concept of weak bases is vital in environmental chemistry. In natural waters, weak bases like carbonate ions can influence the acidity of the water, affecting aquatic life. Understanding how weak bases interact with other substances can help in assessing the health of ecosystems and the impact of pollutants.In industrial applications, weak bases are often used in processes such as wastewater treatment. They can neutralize acids, helping to manage pH levels in effluents before they are discharged into the environment. This application illustrates the practical significance of weak bases in promoting environmental sustainability.In conclusion, the study of weak bases is an integral part of chemistry that has far-reaching implications in various fields, from biology to environmental science. Understanding their properties and behaviors allows us to harness their potential in both natural and industrial processes. As we continue to explore the complexities of chemical interactions, the role of weak bases will undoubtedly remain a topic of great relevance and importance in scientific research and practical applications.

在化学的世界中，理解“弱碱”的概念对学生和专业人士来说都是至关重要的。“弱碱”被定义为在溶液中部分离解的物质，与强碱相比，其氢氧根离子的浓度较低。这一特性使得弱碱在各种化学反应中具有重要意义，尤其是在酸碱平衡中。例如，氨（NH3）就是一个常见的弱碱。当溶解在水中时，它与水分子反应形成铵离子（NH4+）和氢氧根离子（OH-），但这一反应并不会完全进行，这正是弱碱的一个标志。弱碱的重要性不仅限于实验室；它们在生物系统中也发挥着关键作用。例如，碳酸氢根离子（HCO3-）在血液中作为弱碱，帮助维持身体功能所需的pH平衡。弱碱接受质子（H+）而不完全解离的能力使其能够缓冲溶液，在添加酸或碱时抵抗pH值的变化。此外，弱碱的概念在环境化学中至关重要。在自然水体中，像碳酸根离子这样的弱碱可以影响水的酸度，从而影响水生生物。理解弱碱如何与其他物质相互作用有助于评估生态系统的健康及污染物的影响。在工业应用中，弱碱通常用于废水处理等过程。它们可以中和酸，帮助管理排放物的pH水平，以便在排放到环境之前进行处理。这一应用说明了弱碱在促进环境可持续性方面的实际意义。总之，研究弱碱是化学的重要组成部分，对生物学、环境科学等多个领域有着深远的影响。理解它们的性质和行为使我们能够在自然和工业过程中利用它们的潜力。随着我们继续探索化学相互作用的复杂性，弱碱的角色无疑将继续成为科学研究和实际应用中极具相关性和重要性的主题。