freezing point depression

简明释义

冰点降低

英英释义

例句

1.When preparing a saline solution, scientists must calculate the freezing point depression 冰点降低 to ensure proper functionality.

在准备盐水溶液时，科学家必须计算冰点降低冰点降低以确保其正常功能。

2.When salt is added to ice, it causes a significant freezing point depression 冰点降低, allowing the ice to melt at lower temperatures.

当盐加入冰中时，它会导致显著的冰点降低冰点降低，使冰在更低的温度下融化。

3.The freezing point depression 冰点降低 of water is utilized in making homemade ice cream by adding salt to the ice.

水的冰点降低冰点降低被用于制作自制冰淇淋，通过向冰中添加盐。

4.In antifreeze solutions, the freezing point depression 冰点降低 allows vehicles to operate in extremely cold conditions without freezing.

在防冻液中，冰点降低冰点降低使得车辆能够在极寒条件下正常运作而不结冰。

5.The concept of freezing point depression 冰点降低 is essential for understanding how different solutes affect the properties of solvents.

理解不同溶质如何影响溶剂性质的概念中，冰点降低冰点降低是至关重要的。

作文

The phenomenon of freezing point depression is a fascinating aspect of physical chemistry that describes how the addition of solute to a solvent can lower the freezing point of the solution. This property is particularly significant in various scientific and practical applications, from understanding natural processes to developing industrial solutions. When a non-volatile solute is dissolved in a solvent, it disrupts the orderly arrangement of the solvent molecules, which is necessary for the formation of a solid structure. As a result, the temperature at which the solvent freezes is decreased. This can be observed in everyday life, such as when salt is used to melt ice on roads during winter. The salt lowers the freezing point depression of water, preventing it from freezing even at temperatures below 0 degrees Celsius.In a more technical context, the extent of freezing point depression can be calculated using the formula: ΔTf = i * Kf * m, where ΔTf is the change in freezing point, i is the van 't Hoff factor (which accounts for the number of particles the solute breaks into), Kf is the freezing point depression constant specific to the solvent, and m is the molality of the solution. This equation not only provides insight into how solutes affect freezing points but also emphasizes the importance of concentration and the nature of the solute in determining the degree of depression.Understanding freezing point depression is crucial in fields such as cryogenics, where maintaining low temperatures is essential. For example, in the preservation of biological samples, knowing how different cryoprotectants affect the freezing point can help in selecting the appropriate substances to prevent ice crystal formation, which could damage cells. Additionally, in food science, freezing point depression plays a role in the texture and quality of frozen foods. By manipulating the concentration of sugars or salts in food products, manufacturers can achieve desired textures and prevent undesirable ice formation.Moreover, freezing point depression is also relevant in meteorology and environmental science. The presence of salts and other impurities in natural bodies of water can influence their freezing behavior, affecting aquatic life and ecosystems. As climate change continues to impact global temperatures, understanding these interactions becomes increasingly important.In conclusion, freezing point depression is not just a theoretical concept; it has real-world implications across various disciplines. From enhancing our understanding of natural phenomena to improving industrial processes, the study of how solutes affect the freezing point of solvents remains a vital area of research. By continuing to explore this topic, we can uncover new applications and deepen our comprehension of the intricate behaviors of solutions in different environments.

“冰点降低”这一现象是物理化学中一个引人入胜的方面，它描述了溶质加入溶剂后如何降低溶液的冰点。这一特性在各种科学和实际应用中尤为重要，从理解自然过程到开发工业解决方案。当非挥发性溶质溶解在溶剂中时，它会干扰溶剂分子的有序排列，而这种排列对于形成固体结构是必要的。因此，溶剂冻结的温度降低。这可以在日常生活中观察到，例如在冬季使用盐融化道路上的冰。盐降低了水的冰点降低，使其即使在低于0摄氏度的温度下也不会冻结。在更技术的背景下，冰点降低的程度可以通过公式计算：ΔTf = i * Kf * m，其中ΔTf是冰点变化，i是范霍夫因子（考虑溶质分解成的粒子数量），Kf是特定于溶剂的冰点降低常数，m是溶液的摩尔浓度。这个方程不仅提供了溶质如何影响冰点的见解，还强调了浓度和溶质性质在确定降低程度中的重要性。理解冰点降低在低温学等领域至关重要，在这些领域，维持低温至关重要。例如，在生物样本的保存中，了解不同的冷冻保护剂如何影响冰点可以帮助选择合适的物质，以防止冰晶形成，这可能会损害细胞。此外，在食品科学中，冰点降低在冷冻食品的质地和质量中发挥着作用。通过操控食品产品中糖或盐的浓度，制造商可以实现所需的质地并防止不必要的冰形成。此外，冰点降低在气象学和环境科学中也相关。自然水体中盐和其他杂质的存在可能会影响其冻结行为，从而影响水生生物和生态系统。随着气候变化继续影响全球温度，理解这些相互作用变得越来越重要。总之，冰点降低不仅是一个理论概念；它在各个学科中具有现实世界的影响。从增强我们对自然现象的理解到改善工业过程，研究溶质如何影响溶剂的冰点仍然是一个重要的研究领域。通过继续探索这一主题，我们可以发现新的应用，并加深我们对不同环境中溶液复杂行为的理解。