vapor pressure

简明释义

蒸发活力

英英释义

例句

1.The vapor pressure of water increases with temperature, leading to more evaporation.

水的蒸气压随着温度的升高而增加，从而导致更多的蒸发。

2.In a closed container, the vapor pressure will eventually reach equilibrium with the liquid phase.

在一个封闭的容器中，蒸气压最终将与液相达到平衡。

3.The vapor pressure of a substance is crucial for understanding its boiling point.

蒸气压对于理解物质的沸点至关重要。

4.When the vapor pressure exceeds atmospheric pressure, the liquid begins to boil.

当蒸气压超过大气压时，液体开始沸腾。

5.Chemists often measure the vapor pressure to determine the purity of a solvent.

化学家常常测量蒸气压来确定溶剂的纯度。

作文

Vapor pressure is a fundamental concept in the study of thermodynamics and physical chemistry. It refers to the pressure exerted by a vapor in equilibrium with its liquid or solid phase at a given temperature. Understanding vapor pressure (蒸气压) is essential for various applications, including meteorology, engineering, and environmental science.To grasp the significance of vapor pressure (蒸气压), we first need to understand that every substance has a specific vapor pressure (蒸气压) at a particular temperature. For instance, water at room temperature has a certain vapor pressure (蒸气压), which increases as the temperature rises. This phenomenon occurs because, as the temperature increases, more molecules have sufficient energy to escape from the liquid phase into the vapor phase, resulting in higher vapor pressure (蒸气压).The concept of vapor pressure (蒸气压) is crucial in understanding boiling points. The boiling point of a liquid is the temperature at which its vapor pressure (蒸气压) equals the atmospheric pressure. For example, at sea level, where atmospheric pressure is approximately 101.3 kPa, water boils at 100 degrees Celsius. However, at higher altitudes where the atmospheric pressure is lower, water boils at a lower temperature due to the decrease in vapor pressure (蒸气压) needed to equal the surrounding pressure.In addition to boiling points, vapor pressure (蒸气压) plays a significant role in weather phenomena. For instance, when the vapor pressure (蒸气压) of water vapor in the air exceeds a certain threshold, condensation occurs, leading to the formation of clouds and precipitation. Meteorologists often use vapor pressure (蒸气压) measurements to predict weather patterns and understand humidity levels in the atmosphere.Furthermore, the concept of vapor pressure (蒸气压) is vital in industrial processes, such as distillation and refrigeration. In distillation, the separation of components in a mixture relies on differences in their vapor pressures (蒸气压). By carefully controlling temperatures, industries can exploit these differences to purify substances efficiently. Similarly, in refrigeration systems, the vapor pressure (蒸气压) of refrigerants is manipulated to absorb heat from the environment, thus cooling the desired space.Overall, vapor pressure (蒸气压) is a critical property that influences various natural and industrial processes. Its understanding is not only limited to theoretical studies but also extends to practical applications in daily life. From boiling water to predicting weather changes and optimizing industrial operations, the implications of vapor pressure (蒸气压) are vast and significant. Therefore, a comprehensive understanding of this concept is essential for anyone studying chemistry, environmental science, or engineering. Mastering vapor pressure (蒸气压) will undoubtedly enhance one’s ability to analyze and engage with the physical world effectively.

蒸气压是热力学和物理化学研究中的一个基本概念。它指的是在给定温度下，蒸气与其液体或固体相处于平衡状态时所施加的压力。理解蒸气压（vapor pressure）对于气象学、工程学和环境科学等各种应用至关重要。为了掌握蒸气压（vapor pressure）的重要性，我们首先需要理解每种物质在特定温度下都有一个特定的蒸气压（vapor pressure）。例如，室温下的水具有一定的蒸气压（vapor pressure），随着温度的升高，这一蒸气压（vapor pressure）也会增加。这种现象发生是因为随着温度的升高，更多的分子具有足够的能量从液相逃逸到气相，从而导致更高的蒸气压（vapor pressure）。蒸气压（vapor pressure）的概念对于理解沸点至关重要。液体的沸点是其蒸气压（vapor pressure）等于大气压力的温度。例如，在海平面上，大气压力约为101.3千帕，此时水在100摄氏度沸腾。然而，在大气压力较低的高海拔地区，由于需要等于周围压力的蒸气压（vapor pressure）降低，水在较低温度下沸腾。除了沸点，蒸气压（vapor pressure）在天气现象中也起着重要作用。例如，当空气中水蒸气的蒸气压（vapor pressure）超过某个阈值时，会发生凝结，导致云和降水的形成。气象学家经常使用蒸气压（vapor pressure）测量值来预测天气模式并了解大气中的湿度水平。此外，蒸气压（vapor pressure）的概念在工业过程（如蒸馏和制冷）中也至关重要。在蒸馏过程中，混合物中组分的分离依赖于它们的蒸气压（vapor pressure）差异。通过精确控制温度，工业可以利用这些差异有效地净化物质。同样，在制冷系统中，制冷剂的蒸气压（vapor pressure）被操控以吸收环境中的热量，从而冷却所需空间。总之，蒸气压（vapor pressure）是影响各种自然和工业过程的关键属性。对这一概念的理解不仅限于理论研究，还扩展到日常生活中的实际应用。从煮水到预测天气变化以及优化工业操作，蒸气压（vapor pressure）的影响广泛而深远。因此，全面理解这一概念对于任何学习化学、环境科学或工程学的人来说都是必不可少的。掌握蒸气压（vapor pressure）无疑将增强个人有效分析和参与物理世界的能力。