molar rotation

简明释义

克分子旋光度

英英释义

例句

1.Chemists often use molar rotation to identify unknown substances in the lab.

化学家们常常使用摩尔旋转来识别实验室中的未知物质。

2.To calculate the specific rotation, we need to know the molar rotation of the sample.

要计算比旋转，我们需要知道样品的摩尔旋转。

3.In optical activity experiments, the molar rotation is crucial for understanding chiral compounds.

在光学活性实验中，摩尔旋转对理解手性化合物至关重要。

4.The scientist measured the molar rotation of the sugar solution to determine its concentration.

科学家测量了糖溶液的摩尔旋转以确定其浓度。

5.The molar rotation of the compound was found to change with temperature variations.

该化合物的摩尔旋转随着温度变化而变化。

作文

The concept of molar rotation is fundamental in the field of chemistry, particularly in stereochemistry and optical activity. It refers to the degree to which a substance can rotate plane-polarized light when it is dissolved in a solution. This property is significant because it helps chemists understand the spatial arrangement of atoms within a molecule and how these arrangements affect the molecule's interactions with light. The molar rotation is typically expressed in degrees per mole per liter, which provides a standardized way to compare the optical activities of different substances. To better illustrate this concept, let’s consider a simple example involving sugars. Many sugars are optically active, meaning they can rotate plane-polarized light. For instance, glucose has a specific molar rotation that differs from that of fructose. By measuring the molar rotation of these sugars in solution, chemists can determine their concentrations and even identify them in complex mixtures. This measurement is particularly useful in the food industry, where knowing the concentration of sugars in products can influence quality control and product formulation. Furthermore, the molar rotation can provide insights into the purity of a substance. Impurities often alter the optical properties of a solution, which can lead to changes in the molar rotation. Thus, by comparing the observed molar rotation with known values for pure substances, chemists can infer the presence of impurities and assess the quality of their samples. In addition to its applications in organic chemistry, molar rotation is also significant in pharmaceuticals. The optical activity of drug molecules can affect their biological activity. For example, one enantiomer of a chiral drug might be therapeutically active while the other could be inactive or even harmful. By understanding the molar rotation of these compounds, researchers can better design and optimize drugs for human use. Moreover, the relationship between molar rotation and molecular structure is an area of ongoing research. Scientists continue to explore how various functional groups and stereochemistry influence molar rotation. This understanding can lead to the development of new materials with tailored optical properties, which have applications in fields such as photonics and materials science. In conclusion, the study of molar rotation is a vital aspect of chemistry that extends beyond mere academic interest. Its implications touch upon various industries, including food, pharmaceuticals, and materials science. By continuing to investigate molar rotation, researchers can unlock new applications and enhance our understanding of molecular behavior in solutions. As we delve deeper into the intricacies of this concept, we not only advance scientific knowledge but also contribute to innovations that can improve everyday life.

‘摩尔旋转’的概念在化学领域中是基础性的，尤其是在立体化学和光学活性方面。它指的是物质在溶液中能旋转平面偏振光的程度。这一特性非常重要，因为它帮助化学家理解分子中原子的空间排列，以及这些排列如何影响分子与光的相互作用。‘摩尔旋转’通常以每摩尔每升的度数表示，这提供了一种标准化的方式来比较不同物质的光学活性。为了更好地说明这一概念，让我们考虑一个涉及糖的简单例子。许多糖类是光学活性的，这意味着它们可以旋转平面偏振光。例如，葡萄糖的特定‘摩尔旋转’与果糖的不同。通过测量这些糖在溶液中的‘摩尔旋转’，化学家可以确定它们的浓度，甚至在复杂混合物中识别它们。这一测量在食品行业中尤为有用，因为了解产品中糖的浓度可以影响质量控制和产品配方。此外，‘摩尔旋转’还可以提供有关物质纯度的见解。杂质通常会改变溶液的光学特性，从而导致‘摩尔旋转’的变化。因此，通过将观察到的‘摩尔旋转’与已知纯物质的值进行比较，化学家可以推断出杂质的存在并评估样品的质量。除了在有机化学中的应用外，‘摩尔旋转’在制药领域也具有重要意义。药物分子的光学活性可能会影响其生物活性。例如，某种手性药物的一个对映体可能具有治疗活性，而另一个则可能无效或甚至有害。通过理解这些化合物的‘摩尔旋转’，研究人员可以更好地设计和优化用于人类使用的药物。此外，‘摩尔旋转’与分子结构之间的关系是一个持续研究的领域。科学家们继续探索各种官能团和立体化学如何影响‘摩尔旋转’。这种理解可以导致新材料的开发，这些材料具有定制的光学特性，在光子学和材料科学等领域具有应用。总之，‘摩尔旋转’的研究是化学中的一个重要方面，超越了单纯的学术兴趣。它的影响涉及多个行业，包括食品、制药和材料科学。通过继续研究‘摩尔旋转’，研究人员可以解锁新的应用，并增强我们对溶液中分子行为的理解。当我们深入探讨这一概念的复杂性时，我们不仅推动了科学知识的进步，还为改善日常生活做出了贡献。