buffer solution

简明释义

缓冲溶液

英英释义

例句

1.Biological systems rely on buffer solutions 缓冲溶液 to keep the pH within a narrow range.

生物系统依赖于缓冲溶液 缓冲溶液保持pH值在狭窄范围内。

2.To calibrate the pH meter, you should use a buffer solution 缓冲溶液 with a known pH value.

要校准pH计，您应该使用pH值已知的缓冲溶液 缓冲溶液。

3.The buffer solution 缓冲溶液 helps to resist changes in pH when acids or bases are added.

当添加酸或碱时，缓冲溶液 缓冲溶液有助于抵抗pH值的变化。

4.The effectiveness of a buffer solution 缓冲溶液 is determined by its concentration and the pKa of the acid-base pair.

一个缓冲溶液 缓冲溶液的有效性取决于其浓度和酸碱对的pKa值。

5.In the laboratory, we often prepare a buffer solution 缓冲溶液 to maintain a stable pH during experiments.

在实验室，我们经常准备一个缓冲溶液 缓冲溶液以在实验过程中维持稳定的pH值。

作文

A buffer solution is a vital component in chemistry, particularly in the context of maintaining stable pH levels in various environments. Essentially, a buffer solution is a special type of solution that resists changes in pH when small amounts of an acid or base are added. This property is crucial in many biological and chemical processes where maintaining a specific pH is necessary for optimal functioning.For instance, in biological systems, enzymes often require a narrow pH range to function effectively. If the pH deviates too far from this range, enzyme activity can be inhibited, leading to detrimental effects on metabolic processes. This is where buffer solutions come into play. They help to stabilize the pH in living organisms, ensuring that biochemical reactions proceed smoothly.A common example of a buffer solution is a mixture of acetic acid and sodium acetate. When small amounts of hydrochloric acid (HCl) are added to this solution, the acetic acid can neutralize the excess hydrogen ions, preventing a significant change in pH. Conversely, if a base such as sodium hydroxide (NaOH) is added, the acetate ions can react with the hydroxide ions, again minimizing pH fluctuations. This dual capability of buffer solutions to neutralize both acids and bases makes them indispensable in many scientific applications.In laboratory settings, buffer solutions are frequently used in experiments requiring precise pH control. For example, during titration experiments, where the concentration of an unknown solution is determined, the presence of a buffer solution ensures that the pH remains constant, allowing for more accurate results. Similarly, in the preparation of biological samples, maintaining a stable pH is critical for preserving the integrity of cells and biomolecules.Moreover, buffer solutions are not only limited to laboratory use but also have practical applications in everyday life. For instance, many personal care products, such as shampoos and lotions, are formulated with buffer solutions to ensure that they are gentle on the skin and hair. The pH of these products is carefully controlled to prevent irritation and maintain the natural balance of the skin.In conclusion, understanding buffer solutions and their role in stabilizing pH is essential for anyone studying chemistry or related fields. Their ability to resist changes in pH makes them crucial in both biological and chemical processes. Whether in a laboratory, a biological system, or even in everyday products, buffer solutions are fundamental to maintaining the conditions necessary for various reactions and processes to occur efficiently. As we continue to explore the intricacies of science, the importance of buffer solutions will undoubtedly remain a key topic of interest and study.

缓冲溶液是化学中一个重要的组成部分，特别是在维持各种环境中稳定的pH值方面。基本上，缓冲溶液是一种特殊类型的溶液，当少量酸或碱被添加时，它能够抵抗pH值的变化。这一特性在许多生物和化学过程中至关重要，因为在这些过程中维持特定的pH值对于最佳功能是必要的。例如，在生物系统中，酶通常需要一个狭窄的pH范围才能有效地发挥作用。如果pH值偏离这个范围过远，酶的活性可能会受到抑制，从而对新陈代谢过程产生不利影响。这就是缓冲溶液发挥作用的地方。它们帮助稳定生物体内的pH值，确保生化反应顺利进行。一个常见的缓冲溶液的例子是醋酸和醋酸钠的混合物。当向该溶液中添加少量盐酸（HCl）时，醋酸可以中和过量的氢离子，从而防止pH值发生显著变化。相反，如果添加像氢氧化钠（NaOH）这样的碱，醋酸根离子可以与氢氧根离子反应，再次最小化pH波动。这种缓冲溶液同时中和酸和碱的双重能力使其在许多科学应用中不可或缺。在实验室环境中，缓冲溶液经常用于需要精确pH控制的实验中。例如，在滴定实验中，通过确定未知溶液的浓度，缓冲溶液的存在确保pH保持恒定，从而允许更准确的结果。同样，在生物样品的制备中，保持稳定的pH对保护细胞和生物分子的完整性至关重要。此外，缓冲溶液不仅限于实验室使用，还有实际应用于日常生活中。例如，许多个人护理产品，如洗发水和乳液，都是用缓冲溶液配制的，以确保它们对皮肤和头发温和。这些产品的pH值经过仔细控制，以防止刺激并维持皮肤的自然平衡。总之，理解缓冲溶液及其在稳定pH中的作用对于任何学习化学或相关领域的人来说都是必不可少的。它们抵抗pH变化的能力使其在生物和化学过程中至关重要。无论是在实验室、生物系统还是日常产品中，缓冲溶液都是维持各种反应和过程有效发生所需条件的基础。随着我们继续探索科学的复杂性，缓冲溶液的重要性无疑将继续成为一个关键的研究和关注话题。