
词汇信息
activation energy(活化能)是指在化学反应中,反应物需要吸收的最小能量,以便进行反应。它是一个名词,通常用于化学和物理学领域。
词语辨析
在科学文献中,activation energy通常没有形容词形式。它是一个专门的术语,主要用于描述能量的概念,没有其他广泛的含义。
词汇扩充
- kinetic energy(动能)
- potential energy(势能)
- thermal energy(热能)
近义词
- energy barrier(能量屏障)
反义词
- none(无)
字典来源
柯林斯词典:activation energy is the minimum amount of energy required for a chemical reaction to occur.
牛津词典:activation energy is the energy required to start a reaction.
用法
活化能通常用于描述化学反应的速率和机制,决定反应是否能发生。
例句
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The activation energy for this reaction is quite high.
这个反应的活化能相当高。
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Increasing the temperature lowers the activation energy needed.
提高温度会降低所需的活化能。
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The scientist measured the activation energy of the reaction.
科学家测量了反应的活化能。
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In this experiment, the activation energy was found to be 50 kJ/mol.
在这项实验中,发现活化能为50千焦耳/摩尔。
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Catalysts work by lowering the activation energy required for the reaction.
催化剂通过降低反应所需的活化能来工作。
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The activation energy is a crucial factor in determining reaction rates.
活化能是决定反应速率的重要因素。
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Understanding activation energy is essential for chemical kinetics.
了解活化能对于化学动力学至关重要。
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Different reactions have different activation energies.
不同的反应具有不同的活化能。
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The concept of activation energy can explain why some reactions are slow.
活化能的概念可以解释为什么某些反应很慢。
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Reducing activation energy can lead to faster reactions.
降低活化能可以导致反应更快。
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The activation energy is often represented by the symbol Ea.
活化能通常用符号Ea表示。
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Graphing the reaction can help visualize the activation energy.
绘制反应图可以帮助可视化活化能。
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The activation energy can be affected by the presence of a solvent.
活化能可能会受到溶剂存在的影响。
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They studied how temperature influences activation energy.
他们研究了温度如何影响活化能。
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Calculating the activation energy requires experimental data.
计算活化能需要实验数据。
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The activation energy is necessary for bond breaking during a reaction.
在反应过程中,活化能是断裂键所必需的。
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Many factors can influence the activation energy of a reaction.
许多因素可以影响反应的活化能。
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The study of activation energy is fundamental to reaction mechanisms.
对活化能的研究是反应机制的基础。
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Knowing the activation energy can help in designing better catalysts.
了解活化能可以帮助设计更好的催化剂。