empirical formula

简明释义

经验公式

英英释义

例句

1.Understanding how to derive the empirical formula 经验式 is essential for students studying chemistry.

理解如何推导经验式对学习化学的学生来说至关重要。

2.The chemist derived the empirical formula 经验式 of the compound after analyzing its composition.

化学家在分析化合物的成分后得出了该化合物的经验式。

3.The empirical formula 经验式 of glucose is CH2O, indicating a 1:2:1 ratio of carbon, hydrogen, and oxygen.

葡萄糖的经验式是CH2O，表示碳、氢和氧的比例为1:2:1。

4.To find the empirical formula 经验式, you need to calculate the moles of each element present.

要找到经验式，需要计算每种元素的摩尔数。

5.In organic chemistry, the empirical formula 经验式 helps identify the simplest ratio of elements in a molecule.

在有机化学中，经验式有助于识别分子中元素的最简单比例。

作文

The concept of an empirical formula is fundamental in the field of chemistry, as it provides a simple representation of the composition of a substance. An empirical formula indicates the ratio of the elements present in a compound rather than the actual number of atoms. This means that while it gives essential information about the types of atoms involved, it does not convey the precise arrangement or the molecular structure of the compound. For example, the empirical formula for glucose is CH2O, which reflects the ratio of carbon, hydrogen, and oxygen in the molecule, but does not reveal that glucose has a more complex molecular structure with six carbon atoms, twelve hydrogen atoms, and six oxygen atoms, represented by the molecular formula C6H12O6.Understanding empirical formulas is crucial for chemists when analyzing substances and conducting experiments. It allows scientists to simplify their calculations and understand the basic composition of various compounds without needing to delve into the complexities of their molecular structures. In many cases, particularly in organic chemistry, the empirical formula can provide insight into the potential reactions a compound might undergo based on its elemental composition.Moreover, the determination of an empirical formula typically involves experimental data. Chemists often conduct experiments to analyze the mass of each element in a compound. By converting these masses into moles and then finding the simplest whole-number ratio among them, they can derive the empirical formula. This process illustrates the practical application of stoichiometry in chemistry, where the relationships between reactants and products are quantified.In addition to its importance in chemical analysis, the empirical formula also plays a role in education. Students learning about chemistry are introduced to the concept early on, as it lays the groundwork for more advanced topics like molecular formulas and structural formulas. By grasping the idea of an empirical formula, students develop a foundational understanding of how different compounds relate to one another, which is essential for their future studies in chemistry and related fields.In conclusion, the empirical formula serves as a vital tool in chemistry, providing a straightforward way to represent the composition of compounds. It emphasizes the ratios of elements within a substance, facilitating easier calculations and a better understanding of chemical properties. As both a practical and educational concept, mastering the empirical formula is essential for anyone interested in the sciences, particularly chemistry. Understanding how to derive and apply empirical formulas can significantly enhance one's ability to analyze chemical substances and predict their behaviors in various chemical reactions.

‘经验式’的概念在化学领域中是基础性的，因为它提供了物质组成的简单表示。‘经验式’表示化合物中存在的元素的比例，而不是原子的实际数量。这意味着虽然它提供了关于参与的原子类型的重要信息，但并不传达化合物的精确排列或分子结构。例如，葡萄糖的‘经验式’是CH2O，这反映了分子中碳、氢和氧的比例，但并没有揭示葡萄糖具有更复杂的分子结构，其中包含六个碳原子、十二个氢原子和六个氧原子，分子式为C6H12O6。理解‘经验式’对化学家在分析物质和进行实验时至关重要。它使科学家能够简化计算，并了解各种化合物的基本组成，而无需深入研究其分子结构的复杂性。在许多情况下，特别是在有机化学中，‘经验式’可以根据其元素组成提供对化合物可能发生的反应的洞察。此外，确定‘经验式’通常涉及实验数据。化学家通常会进行实验以分析化合物中每种元素的质量。通过将这些质量转换为摩尔数，然后找到它们之间最简单的整数比，他们可以推导出‘经验式’。这个过程说明了化学中化学计量法的实际应用，即反应物和产品之间的关系被量化。除了在化学分析中的重要性，‘经验式’在教育中也发挥着作用。学习化学的学生在早期就接触到这一概念，因为它为更高级的话题如分子式和结构式奠定了基础。通过掌握‘经验式’的概念，学生们发展出对不同化合物之间相互关系的基础理解，这对他们未来在化学及相关领域的学习至关重要。总之，‘经验式’作为化学中的一个重要工具，为化合物的组成提供了一种直接的表示方法。它强调了物质内元素的比例，便于更简单的计算和对化学性质的更好理解。作为一个既实用又具有教育意义的概念，掌握‘经验式’对任何对科学感兴趣的人，尤其是化学，都是至关重要的。理解如何推导和应用‘经验式’可以显著增强一个人分析化学物质和预测其在各种化学反应中行为的能力。