reagent

简明释义

英[riˈeɪdʒənt]美[riˈeɪdʒənt]

n. [试剂] 试剂；反应物

复 数 r e a g e n t s

英英释义

单词用法

同义词

反义词

例句

1.The reagent here is not the right kind for the experiment.

我的试剂不是这次实验用的那种。

2.The next step for us is to develop a diagnosis reagent box as soon as possible.

我们下一步所要做的就是尽快发明诊断试剂盒。

3.Commercial companies took over much more of the AHG market, and the reagent became extremely avid and much more specific.

商业公司接管了大部分AHG市场，试剂的需求日益增大，而且试剂种类越来越具体。

4.Commercial companies took over much more of the AHG market, and the reagent became extremely avid and much more specific.

商业公司接管了大部分AHG市场，试剂的需求日益增大，而且试剂种类越来越具体。

5.This is much less that two times 1,054, so therefore mag is the limiting reagent.

054摩尔，远比两倍要少，镁是极限反应物。

6.They often use oriole reagent in their experiments.

他们在实验过程中，要经常用到吡咯试剂。

7.Sodium azide may be a useful reagent for further studying this mechanism.

叠氮钠可作为一种有用的试剂供深入研究这种抑制作用的机制。

8.When the tipping point comes, and all of the unknown reagent has reacted, the solution changes colour.

当滴定终点到来时，所有的未知溶液全都完成了化学反应，溶液的颜色就会发生变化。

9.The ion-supported hypervalent iodine(iii) reagent is a kind of "task-specific ionic liquids".

离子负载的高价碘（iii）试剂是一种“功能化离子液体”。

10.When mixed with water, the reagent produces a gas that can be collected.

与水混合时，该试剂会产生一种气体，可以被收集。

11.To test for the presence of glucose, we used a special reagent that changes color.

为了检测葡萄糖的存在，我们使用了一种特殊的试剂，它会变色。

12.The reagent must be stored in a cool, dry place to maintain its effectiveness.

该试剂必须存放在阴凉干燥的地方，以保持其有效性。

13.The reagent used in this experiment is highly sensitive to temperature changes.

这个实验中使用的试剂对温度变化非常敏感。

14.In the laboratory, we added a specific reagent to initiate the chemical reaction.

在实验室中，我们添加了一种特定的试剂来启动化学反应。

作文

In the field of chemistry, the term reagent refers to a substance or compound that is added to a system to bring about a chemical reaction or to see if a reaction occurs. Understanding the role of reagent is crucial for anyone studying chemistry, as these substances are fundamental in various experiments and procedures. For instance, when conducting a titration, specific reagents are used to determine the concentration of an unknown solution. The choice of reagent can significantly affect the outcome of the experiment, making it essential to select the appropriate one based on the reaction you wish to observe.One common example of a reagent is phenolphthalein, which is often used as an indicator in acid-base titrations. When added to a solution, it changes color depending on the pH level of the solution. This property makes phenolphthalein a valuable reagent for chemists trying to identify the endpoint of a titration. Without such reagents, many chemical reactions would go unnoticed, and the study of chemistry would be far less effective.Additionally, reagents can also serve as catalysts in certain reactions, speeding up the process without being consumed in the reaction itself. For example, enzymes are biological reagents that facilitate biochemical reactions in living organisms. These natural reagents are vital for processes like digestion and metabolism, highlighting the importance of reagents not only in laboratory settings but also in biological systems.In organic chemistry, the use of specific reagents can lead to the synthesis of complex molecules from simpler ones. For example, Grignard reagents, which are organomagnesium compounds, are used to form carbon-carbon bonds in organic synthesis. By understanding how different reagents interact with each other, chemists can design pathways to create new compounds, which can have applications in pharmaceuticals, materials science, and more.Moreover, safety is a significant concern when working with reagents. Many chemical reagents can be hazardous, requiring proper handling and disposal methods to ensure safety in the laboratory. It is essential for students and professionals alike to be aware of the properties and potential risks associated with the reagents they work with. Proper training and adherence to safety protocols are crucial in preventing accidents and ensuring a safe working environment.In conclusion, the term reagent encompasses a wide range of substances that play pivotal roles in chemical reactions and experiments. From indicators like phenolphthalein to catalysts like enzymes, reagents are indispensable in both laboratory and biological contexts. A thorough understanding of reagents allows chemists to conduct experiments effectively, synthesize new compounds, and ensure safety in their work. As such, mastering the concept of reagent is essential for anyone pursuing a career in the sciences, particularly in chemistry.

在化学领域，术语reagent指的是一种或多种物质或化合物，这些物质被添加到一个系统中以引发化学反应或观察反应是否发生。理解reagent的作用对于任何学习化学的人来说都是至关重要的，因为这些物质在各种实验和程序中是基础。例如，在进行滴定时，特定的reagents用于确定未知溶液的浓度。reagent的选择可以显著影响实验的结果，因此根据您希望观察的反应选择合适的reagent是必不可少的。一个常见的reagent例子是酚酞，它通常作为酸碱滴定中的指示剂。当添加到溶液中时，它会根据溶液的pH值改变颜色。这一特性使得酚酞成为化学家识别滴定终点的有价值的reagent。没有这样的reagents，许多化学反应将不会被注意到，化学研究的效果将大大降低。此外，reagents在某些反应中还可以作为催化剂，加速反应过程而不被消耗。例如，酶是生物reagents，促进生物体内的生化反应。这些天然reagents对于消化和新陈代谢等过程至关重要，突显了reagents在实验室环境和生物系统中的重要性。在有机化学中，特定reagents的使用可以将简单分子合成复杂分子。例如，格氏试剂是一种有机镁化合物，用于在有机合成中形成碳-碳键。通过理解不同reagents之间的相互作用，化学家可以设计合成新化合物的路径，这些化合物可以在制药、材料科学等领域中应用。此外，在处理reagents时，安全是一个重要的关注点。许多化学reagents可能是危险的，需要正确的处理和处置方法以确保实验室的安全。学生和专业人员都必须意识到他们所使用的reagents的特性和潜在风险。适当的培训和遵循安全协议对于防止事故和确保安全的工作环境至关重要。总之，术语reagent涵盖了一系列在化学反应和实验中发挥关键作用的物质。从像酚酞这样的指示剂到像酶这样的催化剂，reagents在实验室和生物学背景下都是不可或缺的。对reagents的透彻理解使化学家能够有效地进行实验，合成新化合物，并确保工作安全。因此，掌握reagent的概念对于任何追求科学职业的人来说，尤其是在化学领域，都是至关重要的。