initial boiling point

简明释义

始沸点初始沸点

英英释义

例句

1.The initial boiling point of water is 100 degrees Celsius at sea level.

水的初始沸点在海平面上是100摄氏度。

2.Knowing the initial boiling point helps in the distillation process.

了解初始沸点有助于蒸馏过程。

3.The initial boiling point of this organic solvent is crucial for determining its evaporation rate.

这种有机溶剂的初始沸点对于确定其蒸发速率至关重要。

4.Chemical safety data sheets often include the initial boiling point for hazardous materials.

化学安全数据表通常包括危险材料的初始沸点。

5.In the lab, we measured the initial boiling point of the compound to ensure it was suitable for our experiment.

在实验室中，我们测量了化合物的初始沸点以确保它适合我们的实验。

作文

The concept of the initial boiling point is fundamental in the field of chemistry and engineering, particularly when dealing with liquids and their phase transitions. The initial boiling point refers to the temperature at which a liquid begins to vaporize into gas under a given pressure. Understanding this temperature is crucial for various applications, including distillation, chemical processing, and even cooking. When a substance is heated, its molecules gain kinetic energy, leading to an increase in temperature. As the temperature rises, the intermolecular forces that hold the molecules together weaken. At the initial boiling point, the vapor pressure of the liquid equals the external pressure surrounding it. This equilibrium allows the liquid to transform into vapor, marking the beginning of boiling. Different substances have different initial boiling points, which can be influenced by factors such as atmospheric pressure and the presence of impurities. For example, water has an initial boiling point of 100 degrees Celsius at sea level, but this temperature decreases at higher altitudes where atmospheric pressure is lower. This phenomenon explains why cooking times can vary significantly in mountainous regions compared to sea level. In industrial processes, knowing the initial boiling point of various chemicals is essential for safety and efficiency. For instance, during the distillation of crude oil, the separation of hydrocarbons is based on their initial boiling points. Lighter fractions, which have lower initial boiling points, are collected first, while heavier fractions are obtained later in the process. This method not only maximizes the yield of valuable products but also minimizes the risk of overheating and potentially dangerous reactions. Moreover, the initial boiling point plays a significant role in environmental science. When assessing the volatility of organic compounds, scientists often refer to their initial boiling points to predict how they will behave in the atmosphere. Compounds with low initial boiling points tend to evaporate quickly, contributing to air pollution and posing health risks. Therefore, understanding these properties helps in developing regulations and strategies to mitigate environmental impacts. In conclusion, the initial boiling point is not just a simple measurement; it is a critical parameter that affects many aspects of science and industry. From cooking to chemical engineering, the initial boiling point informs us about the behavior of substances under heat, guiding us in practical applications and safety measures. As we continue to explore the properties of materials, the significance of the initial boiling point will remain a key topic of interest for both researchers and practitioners alike.

“初始沸点”这一概念在化学和工程领域中是基本的，特别是在处理液体及其相变时。“初始沸点”指的是在特定压力下，液体开始蒸发成气体的温度。理解这个温度对于各种应用至关重要，包括蒸馏、化学加工甚至烹饪。当一种物质被加热时，其分子获得动能，导致温度升高。随着温度的上升，维持分子之间的分子间力减弱。在“初始沸点”，液体的蒸汽压等于周围的外部压力。这种平衡使得液体能够转变为蒸汽，标志着沸腾的开始。不同的物质具有不同的“初始沸点”，而且可以受到大气压力和杂质存在等因素的影响。例如，水在海平面上的“初始沸点”为100摄氏度，但在更高海拔地区，由于大气压力较低，这一温度会降低。这一现象解释了为什么在山区的烹饪时间与海平面相比可能会有显著差异。在工业过程中，了解各种化学物质的“初始沸点”对于安全和效率至关重要。例如，在原油的蒸馏过程中，碳氢化合物的分离是基于它们的“初始沸点”。轻质组分（具有较低“初始沸点”的组分）首先被收集，而重质组分则在后续过程中获得。这种方法不仅最大化了有价值产品的产量，还最小化了过热和潜在危险反应的风险。此外，“初始沸点”在环境科学中也发挥了重要作用。在评估有机化合物的挥发性时，科学家们常常参考它们的“初始沸点”来预测它们在大气中的行为。具有低“初始沸点”的化合物往往会迅速蒸发，从而导致空气污染并对健康构成风险。因此，理解这些性质有助于制定法规和策略，以减轻环境影响。总之，“初始沸点”不仅仅是一个简单的测量，它是一个关键参数，影响着科学和工业的许多方面。从烹饪到化学工程，“初始沸点”告诉我们物质在加热条件下的行为，指导我们在实际应用和安全措施中的决策。随着我们继续探索材料的性质，“初始沸点”的重要性将始终是研究人员和从业者共同关注的主题。