empirical formula

简明释义

经验公式

英英释义

例句

1.In chemistry, the simplest ratio of elements in a compound is represented by the empirical formula (经验式).

在化学中，化合物中元素的最简单比例由empirical formula（经验式）表示。

2.The empirical formula (经验式) can differ from the molecular formula, which gives the actual number of atoms.

与给出实际原子数的分子式不同，empirical formula（经验式）可能会有所不同。

3.The empirical formula (经验式) of glucose is CH2O, indicating its basic composition.

葡萄糖的empirical formula（经验式）是CH2O，表明其基本组成。

4.To determine the empirical formula (经验式), we must first find the molar mass of each element.

要确定empirical formula（经验式），我们首先必须找到每种元素的摩尔质量。

5.Scientists often use the empirical formula (经验式) to simplify complex molecular structures.

科学家们常常使用empirical formula（经验式）来简化复杂的分子结构。

作文

The concept of an empirical formula is fundamental in the field of chemistry. An empirical formula represents the simplest whole-number ratio of elements in a compound. Unlike molecular formulas, which can indicate the actual number of atoms of each element present in a molecule, the empirical formula provides a more generalized view of the composition of a compound. For example, the molecular formula of glucose is C6H12O6, but its empirical formula is CH2O. This means that in glucose, there are six carbon atoms, twelve hydrogen atoms, and six oxygen atoms, but when simplified, the ratio of carbon to hydrogen to oxygen is 1:2:1.Understanding the empirical formula is crucial for chemists as it helps them identify the proportions of different elements in a substance without needing to know the exact structure of the molecule. This simplification is particularly useful in various chemical calculations, such as determining the percentage composition of a compound or predicting the behavior of substances in reactions.In practical applications, the empirical formula is often used in stoichiometry, which is the calculation of reactants and products in chemical reactions. By knowing the empirical formula, chemists can easily convert between moles of reactants and products, allowing for efficient planning and execution of experiments. This is especially important in industrial chemistry, where large-scale reactions need precise measurements to ensure safety and effectiveness.Moreover, the empirical formula plays a significant role in the identification of unknown compounds. When a new substance is discovered, scientists can perform elemental analysis to determine the mass percentages of each element present. From this data, they can derive the empirical formula, which serves as a starting point for further investigation into the compound's properties and potential applications.In summary, the empirical formula is a vital tool in chemistry that allows scientists to represent the composition of compounds in a simplified manner. It aids in calculations, identifies unknown substances, and provides insight into the relationships between different elements within a compound. As we continue to explore the vast world of chemistry, the empirical formula will remain an essential concept that underscores the importance of ratios and proportions in understanding the materials that make up our universe.In conclusion, grasping the idea of an empirical formula is key for anyone studying chemistry. It not only simplifies complex molecular information but also enhances our ability to work with various substances effectively. Whether in academic research or industrial applications, the empirical formula stands out as a crucial component of chemical education and practice.

在化学领域，经验式的概念是基础。经验式代表了化合物中元素的最简单整数比。与分子式不同，分子式可以指示分子中每种元素的实际原子数，而经验式则提供了化合物组成的更一般化的视图。例如，葡萄糖的分子式是C6H12O6，但它的经验式是CH2O。这意味着在葡萄糖中，有六个碳原子、十二个氢原子和六个氧原子，但当简化时，碳、氢和氧的比率为1:2:1。理解经验式对化学家至关重要，因为它帮助他们在不需要知道分子确切结构的情况下确定物质中不同元素的比例。这种简化在各种化学计算中尤其有用，例如确定化合物的百分比组成或预测物质在反应中的行为。在实际应用中，经验式通常用于化学计量学，即计算化学反应中的反应物和产物。通过了解经验式，化学家可以轻松地在反应物和产物的摩尔之间进行转换，从而有效地规划和执行实验。这在工业化学中尤为重要，因为大规模反应需要精确的测量以确保安全和有效性。此外，经验式在未知化合物的识别中也发挥着重要作用。当发现一种新物质时，科学家可以进行元素分析以确定每种元素的质量百分比。根据这些数据，他们可以推导出经验式，这作为进一步研究该化合物属性和潜在应用的起点。总之，经验式是化学中一个重要的工具，它允许科学家以简化的方式表示化合物的组成。它有助于计算、识别未知物质，并提供关于化合物内不同元素之间关系的洞察。随着我们继续探索广阔的化学世界，经验式将始终是一个基本概念，强调比率和比例在理解构成我们宇宙的材料中的重要性。最后，掌握经验式的概念对于任何学习化学的人来说都是关键。它不仅简化了复杂的分子信息，还增强了我们有效处理各种物质的能力。无论是在学术研究还是工业应用中，经验式都作为化学教育和实践的重要组成部分而脱颖而出。