这关键区别在单电极电位和标准电极电位之间单电极电位是单个电势electrodein an电化学细胞而标准电极电位是标准条件下两个电极之间的电位差。
An electrochemical cell is a device that can either generate electricity using chemical reactions or use electricity to cause chemical reactions. It has two electrodes as cathode and anode. Each electrode is named as a half cell, where a一半反应发生氧化还原反应。由于两个电极之间的电势而产生电力。如果我们考虑半单元的潜力,我们将其称为“单电极电位”。我们无法测量它,并且与其他电极的电势相比,它始终是测量的。
CONTENTS
1。概述和关键差异
2。What is Single Electrode Potential
3。What is Standard Electrode Potential
4。Side by Side Comparison – Single Electrode Potential vs Standard Electrode Potential in Tabular Form
5。Summary
什么是单电极电位?
单电极电位是电化学细胞半细胞的电位。电化学细胞包含两个半细胞。通常,每个半单元是金属电极。如果有开路,这些金属将其离子释放到电解质(电极浸入的溶液)中。因此,该电极可以在自身周围发展电位。因此,这就是我们称之为单电极电位。
例如,在Daniel细胞中,阳极是锌,阴极为铜。在这里,阳极在阴极产生正电荷时会产生负电荷。这些电荷分别确定这些电极的单电极电势。此外,这种潜力取决于三个因素。离子中的浓度,形成离子和温度的趋势。
What is Standard Electrode Potential
标准电极电位的潜力half cell at standard conditions. In an electrochemical cell, the electricity is generated as a result of the potential difference between two electrodes. There is no way to measure the electrode potential simply and accurately. Moreover, it varies with temperature, concentration and pressure of the system. Therefore, we need to define a standard electrode potential.
标准电极电位是在1-大圈压力,25°C温度和1m摩尔浓度在电解质中的电极的电势。由于我们无法测量单个电极电位,因此我们测量了针对标准氢电极电位的标准值。
单电极电势和标准电极电位有什么区别?
电化学细胞包含两个被称为半细胞的电极。一个电极的电势是单电极电位。但是,如果我们在标准条件下测量它,则称其为标准电极电位。因此,单电极电位和标准电极电位之间的关键差异是,单电极电位是电化学电池中单电极的电位,而标准电极电位是标准条件下两个电极之间的电位差。此外,标准条件是标准氢电极电位。
下面的信息图显示了有关单电极电位和标准电极电位之间差异的更多详细信息。
摘要 - 单电极电势与标准电极电位
An electrochemical cell contains two electrodes. We call the potential of on electrode “single electrode potential”. The key difference between single electrode potential and standard electrode potential is that the single electrode potential is the potential of a single electrode in an electrochemical cell whereas standard electrode potential is the potential difference between two electrodes at standard conditions.
参考:
1.“标准电极电势”。标准电极电位,在这里可用。
2.“单电极电位。”Brainkart,在这里可用。
图片提供:
1. Kurzon在英语Wikipedia的“ Daniel Cell” - 通过Componshelper(公共领域)通过Armando-Martin从En.Wikipedia转移到Commons下议院维基梅迪亚
2。“Standard electrode potential of zinc” By Andyrendall – Own work (Public Domain) via下议院维基梅迪亚
Leave a Reply