stoichiometric
简明释义
英[ˌstɔɪkɪəˈmetrɪk]美[stɔɪkɪˈɑːmɪtrɪk]
adj. 化学计量的；化学计算的
英英释义
单词用法
化学计量点 |
同义词
反义词
例句
1.In this dissertation, the title compounds were synthesized at 825c by stoichiometric ratios of elements.
在本论文中，所有化合物都是以该比例的元素态反应物在825c的温度下合成。
2.Firstly, the oxidative carbonylation of aniline with thiols mediated by stoichiometric selenium has been investigated.
首先考察了在计量硒作用下苯胺和硫醇的氧化羰基化反应。
3.The performance increased with the increase of air flux, the air stoichiometric ratio should be higher than 3.
电池性能随着空气流量增大而上升，空气剂量比系数要大于3；
4.Based on a reactant fed to the process according to the stoichiometric coefficients.
后者是基于供给过程的反应物质量按化学计量系数算得的。
5.Analysis by volumetric procedures requires that some method of indicating the stoichiometric end point be employed.
用容量法进行分析时，需要使用一些指示化学当量终点的方法。
6.The result showed that 1 binds well with the halide anions, and forms 1:1 stoichiometric complexes.
结果表明，这个类肽能很好地识别卤素负离子，并与其形成1∶1的络合物。
7.The gas burner throughly mixes fuel and entrained air to form a nearly stoichiometric mixture prior to combustion.
气体燃烧器使燃料和夹带的空气完全混合，以便在燃 烧之前形成几乎化学计量的混合物。
8.The relation of light intensity and the domain switching voltage of the near-stoichiometric Mg-doped lithium niobate was studied.
研究了在可见光诱导条件下的近化学计量比掺镁铌酸锂的反转电压与光强之间的关系。
9.When the equivalence ratio of the premixed flow is exactly stoichiometric, the combustion temperature reaches the highest.
预混气流的当量比为化学恰当比时，燃烧温度最高；
10.To achieve the desired yield, it is crucial to maintain stoichiometric 化学计量的 conditions during the synthesis process.
为了获得预期产量，在合成过程中维持化学计量的条件至关重要。
11.The reaction did not proceed as expected due to a lack of stoichiometric 化学计量的 balance between the reactants.
由于反应物之间缺乏化学计量的平衡，反应没有按预期进行。
12.In a chemical reaction, the reactants must be combined in their proper stoichiometric 化学计量的 ratios to ensure complete conversion.
在化学反应中，反应物必须以适当的化学计量的比例结合，以确保完全转化。
13.Understanding stoichiometric 化学计量的 relationships helps chemists predict the amounts of products formed in a reaction.
理解化学计量的关系可以帮助化学家预测反应中形成的产物数量。
14.The stoichiometric 化学计量的 coefficients in the balanced equation indicate the proportions of each substance involved.
平衡方程中的化学计量的系数表示每种物质参与的比例。
作文
In the field of chemistry, understanding the concept of stoichiometric reactions is crucial for both theoretical and practical applications. A stoichiometric reaction refers to a balanced chemical equation where the quantities of reactants and products are in the correct proportions as dictated by the law of conservation of mass. This principle states that matter cannot be created or destroyed in a chemical reaction, meaning that the total mass of the reactants must equal the total mass of the products. To illustrate this concept, consider the combustion of methane (CH4). The balanced chemical equation for this reaction is: CH4 + 2 O2 → CO2 + 2 H2O. In this stoichiometric equation, one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water. Each coefficient in the equation represents the ratio of the substances involved in the reaction. Understanding these ratios is essential for chemists when they are calculating how much of each reactant is needed to produce a desired amount of product.The importance of stoichiometric calculations extends beyond academic exercises; it has real-world applications in various industries. For example, in pharmaceuticals, precise stoichiometric calculations ensure that drug formulations have the correct proportions of active ingredients. If the ratios are incorrect, it could lead to ineffective medication or harmful side effects. Similarly, in environmental science, stoichiometric principles are applied to assess pollutant levels and their impacts on ecosystems, helping scientists devise strategies to mitigate environmental damage.Moreover, stoichiometric relationships are not limited to simple chemical reactions. In biochemical processes, such as cellular respiration, stoichiometric analysis helps us understand how organisms convert nutrients into energy. For instance, the overall reaction for cellular respiration can be simplified to: C6H12O6 + 6 O2 → 6 CO2 + 6 H2O. This equation shows that one molecule of glucose reacts with six molecules of oxygen to produce six molecules of carbon dioxide and six molecules of water. By studying these stoichiometric relationships, biochemists can gain insights into metabolic rates and energy production in living organisms.In addition to its applications, the concept of stoichiometric ratios also enhances our understanding of chemical equilibrium. In reversible reactions, the stoichiometric coefficients provide information about the relative amounts of reactants and products at equilibrium. This understanding is vital for chemists who aim to manipulate conditions to favor the formation of desired products, whether in industrial synthesis or laboratory research.In conclusion, mastering the concept of stoichiometric reactions is fundamental for anyone studying chemistry. It not only aids in balancing chemical equations but also plays a significant role in various scientific fields and practical applications. Whether in pharmaceuticals, environmental science, or biochemistry, stoichiometric principles guide researchers and professionals in making informed decisions based on the quantitative relationships between substances. Therefore, a solid grasp of stoichiometric concepts is essential for success in the sciences, enabling us to harness the power of chemistry for innovation and problem-solving.
在化学领域，理解化学计量反应的概念对理论和实践应用至关重要。化学计量反应是指一个平衡的化学方程式，其中反应物和产品的数量按照质量守恒定律的要求处于正确的比例。该原则表明，在化学反应中，物质不能被创造或毁灭，这意味着反应物的总质量必须等于产品的总质量。为了说明这一概念，可以考虑甲烷（CH4）的燃烧。该反应的平衡化学方程式为：CH4 + 2 O2 → CO2 + 2 H2O。在这个化学计量方程式中，一分子甲烷与两分子氧反应，生成一分子二氧化碳和两分子水。方程式中的每个系数代表参与反应的物质之间的比例。理解这些比例对于化学家在计算所需反应物的数量以产生期望的产品量时至关重要。化学计量计算的重要性不仅限于学术练习，它在各行各业都有实际应用。例如，在制药行业，精确的化学计量计算确保药物配方中活性成分的正确比例。如果比例不正确，可能会导致药物无效或有害的副作用。同样，在环境科学中，化学计量原理被应用于评估污染物水平及其对生态系统的影响，帮助科学家制定减轻环境损害的策略。此外，化学计量关系并不限于简单的化学反应。在生化过程中，如细胞呼吸，化学计量分析帮助我们理解生物体如何将营养转化为能量。例如，细胞呼吸的总体反应可以简化为：C6H12O6 + 6 O2 → 6 CO2 + 6 H2O。这个方程式显示，一分子葡萄糖与六分子氧反应，生成六分子二氧化碳和六分子水。通过研究这些化学计量关系，生物化学家可以深入了解活生物体的代谢速率和能量生产。除了它的应用外，化学计量比率的概念还增强了我们对化学平衡的理解。在可逆反应中，化学计量系数提供了关于平衡状态下反应物和产品相对数量的信息。这一理解对于化学家操控条件以促进所需产品形成至关重要，无论是在工业合成还是实验室研究中。总之，掌握化学计量反应的概念是任何学习化学的人所必需的。它不仅有助于平衡化学方程式，而且在各种科学领域和实际应用中发挥着重要作用。无论是在制药、环境科学还是生物化学中，化学计量原理指导研究人员和专业人士基于物质之间的定量关系做出明智的决策。因此，扎实掌握化学计量概念对于在科学领域取得成功至关重要，使我们能够利用化学的力量进行创新和解决问题。
