empirical formula

简明释义

实验式

英英释义

例句

1.To simplify the chemical analysis, the scientist reported the empirical formula 经验公式 instead of the molecular formula.

为了简化化学分析，科学家报告了经验公式 经验公式而不是分子式。

2.In her research, she found that the empirical formula 经验公式 of glucose was C1H2O1.

在她的研究中，她发现葡萄糖的经验公式 经验公式是C1H2O1。

3.The empirical formula 经验公式 helps in identifying the composition of a compound without detailing its structure.

经验公式 经验公式有助于识别化合物的成分，而不详细说明其结构。

4.By using experimental data, researchers derived the empirical formula 经验公式 for the new chemical compound.

通过使用实验数据，研究人员推导出了新化合物的经验公式 经验公式。

5.The chemist calculated the empirical formula 经验公式 of the compound to determine its simplest ratio of elements.

化学家计算了该化合物的经验公式 经验公式以确定其元素的最简单比例。

作文

In the world of chemistry, understanding the composition of substances is crucial for various applications, from pharmaceuticals to materials science. One key concept that helps chemists describe the composition of compounds is the empirical formula. The empirical formula is a representation of the simplest whole-number ratio of the elements present in a compound. For instance, the empirical formula of hydrogen peroxide (H₂O₂) is HO, indicating that for every two hydrogen atoms, there is one oxygen atom. This simplification is particularly useful because it allows chemists to quickly understand the basic composition of a compound without delving into its molecular structure.The significance of the empirical formula extends beyond mere representation; it plays a vital role in stoichiometry, which is the calculation of reactants and products in chemical reactions. By using the empirical formula, chemists can predict how much of each substance will be needed or produced in a reaction. For example, if we know the empirical formula of a compound, we can determine the ratios in which different elements combine, which is essential for balancing chemical equations.Moreover, the empirical formula serves as a foundation for understanding molecular formulas. While the empirical formula provides the simplest ratio, the molecular formula gives the actual number of atoms of each element in a molecule. For example, the molecular formula of glucose is C₆H₁₂O₆, while its empirical formula is CH₂O. This distinction is important in many fields, including biochemistry, where the molecular structure can influence the behavior and function of biological molecules.In practice, determining the empirical formula of a compound often involves experimental techniques such as combustion analysis, where a sample is burned to produce products whose amounts can be measured. By analyzing the masses of the products formed, chemists can deduce the relative amounts of each element in the original compound, allowing them to calculate the empirical formula.The empirical formula is not just a theoretical concept; it has practical applications in industries such as pharmaceuticals, where understanding the precise composition of a drug can affect its efficacy and safety. In material science, knowing the empirical formula of a compound can help engineers design materials with specific properties, such as strength or conductivity.In conclusion, the empirical formula is a fundamental concept in chemistry that provides valuable insights into the composition of compounds. It simplifies complex information into an easily understandable format, facilitating various calculations and applications in both academic and industrial settings. As we continue to explore the intricacies of chemical substances, the importance of the empirical formula remains ever relevant, serving as a bridge between theory and practical application in the fascinating world of chemistry.

在化学的世界中，理解物质的组成对于各种应用至关重要，从制药到材料科学。一个帮助化学家描述化合物组成的关键概念是经验式。经验式是元素在化合物中存在的最简单整数比的表示。例如，过氧化氢（H₂O₂）的经验式是HO，表明每两个氢原子就有一个氧原子。这种简化特别有用，因为它使化学家能够快速了解化合物的基本组成，而无需深入探讨其分子结构。经验式的重要性超出了简单的表示；它在化学反应中的计量学中发挥着至关重要的作用。通过使用经验式，化学家可以预测在反应中需要或产生多少每种物质。例如，如果我们知道一个化合物的经验式，我们可以确定不同元素结合的比例，这对于平衡化学方程式至关重要。此外，经验式作为理解分子式的基础。虽然经验式提供了最简单的比率，但分子式给出了分子中每种元素的实际原子数。例如，葡萄糖的分子式是C₆H₁₂O₆，而它的经验式是CH₂O。这一区别在许多领域中都很重要，包括生物化学，其中分子结构会影响生物分子的行为和功能。在实践中，确定化合物的经验式通常涉及实验技术，如燃烧分析，其中样品被燃烧以产生可以测量的产品。通过分析生成的产品的质量，化学家可以推导出原始化合物中每种元素的相对数量，从而计算出经验式。经验式不仅仅是一个理论概念；它在制药等行业中具有实际应用，了解药物的精确组成可能影响其功效和安全性。在材料科学中，了解化合物的经验式可以帮助工程师设计具有特定特性的材料，例如强度或导电性。总之，经验式是化学中的一个基本概念，它提供了对化合物组成的宝贵见解。它将复杂的信息简化为易于理解的格式，促进了学术和工业环境中的各种计算和应用。随着我们继续探索化学物质的复杂性，经验式的重要性仍然是相关的，它在化学这个迷人的世界中充当了理论与实际应用之间的桥梁。