“electrode potential”的概念、定义、翻译、参考文献-科学参考

electrode potential

Physics

The potential difference produced between the electrode and the solution in a half cell. It is not possible to measure this directly since any measurement involves completing the circuit with the electrolyte, thereby introducing another half cell. Standard electrode potentials E^⦵ are defined by measuring the potential relative to a standard hydrogen half cell using 1.0 molar solution at 25°C. The convention is to designate the cell so that the oxidized form is written first. For example,

${Pt (s) | H}_{2} (g) H^{+} (aq) | {Zn}^{2 +} (aq) | Zn (s)$

The e.m.f. of this cell is −0.76 volt (i.e. the zinc electrode is negative). Thus the standard electrode potential of the Zn²⁺|Zn half cell is −0.76 V. Electrode potentials are also called reduction potentials. See also electromotive series.

Chemistry

The potential difference produced between the electrode and the solution in a half cell. It is not possible to measure this directly since any measurement involves completing the circuit with the electrolyte, thereby introducing another half cell. Standard electrode potentials E^⦵ are defined by measuring the potential relative to a standard hydrogen half cell using 1.0 molar solution at 25°C. The convention is to designate the cell so that the oxidized form is written first. For example,
$Pt (s) | H_{2} (g) H^{+} (aq) | {Zn}^{2 +} (aq) | Zn (s)$
The e.m.f. of this cell is –0.76 volt (i.e. the zinc electrode is negative). Thus the standard electrode potential of the Zn²⁺|Zn half cell is –0.76 V. Electrode potentials are also called reduction potentials. See also electromotive series.

Chemical Engineering

The potential difference between an electrode and the solution in a half-cell. This is not able to be measured directly but instead standard electrode potentials E^° are defined by measuring the potential relative to a standard hydrogen half-cell using molar solution at 25°C. By convention, the cell is written with the oxidized cell first. Published tables are used that list standard electrode potentials. For example, the standard electrode potential of the half-cell Cu|CuSO₄ is 0.34 volt, and the standard electrode potential of the half-cell Ag|AgNO₃ is 0.80 volt. The e.m.f. of a cell Cu|CuSO₄| AgNO₃|Ag is therefore 0.46 volt.

Electronics and Electrical Engineering

See electrochemical series.

Geology and Earth Sciences

See oxidation potential; potential electrode.

单词	electrode potential
释义	electrode potential Physics The potential difference produced between the electrode and the solution in a half cell. It is not possible to measure this directly since any measurement involves completing the circuit with the electrolyte, thereby introducing another half cell. Standard electrode potentials E^⦵ are defined by measuring the potential relative to a standard hydrogen half cell using 1.0 molar solution at 25°C. The convention is to designate the cell so that the oxidized form is written first. For example, ${Pt (s) \| H}_{2} (g) H^{+} (aq) \| {Zn}^{2 +} (aq) \| Zn (s)$ The e.m.f. of this cell is −0.76 volt (i.e. the zinc electrode is negative). Thus the standard electrode potential of the Zn²⁺\|Zn half cell is −0.76 V. Electrode potentials are also called reduction potentials. See also electromotive series. Chemistry The potential difference produced between the electrode and the solution in a half cell. It is not possible to measure this directly since any measurement involves completing the circuit with the electrolyte, thereby introducing another half cell. Standard electrode potentials E^⦵ are defined by measuring the potential relative to a standard hydrogen half cell using 1.0 molar solution at 25°C. The convention is to designate the cell so that the oxidized form is written first. For example, $Pt (s) \| H_{2} (g) H^{+} (aq) \| {Zn}^{2 +} (aq) \| Zn (s)$ The e.m.f. of this cell is –0.76 volt (i.e. the zinc electrode is negative). Thus the standard electrode potential of the Zn²⁺\|Zn half cell is –0.76 V. Electrode potentials are also called reduction potentials. See also electromotive series. Chemical Engineering The potential difference between an electrode and the solution in a half-cell. This is not able to be measured directly but instead standard electrode potentials E^° are defined by measuring the potential relative to a standard hydrogen half-cell using molar solution at 25°C. By convention, the cell is written with the oxidized cell first. Published tables are used that list standard electrode potentials. For example, the standard electrode potential of the half-cell Cu\|CuSO₄ is 0.34 volt, and the standard electrode potential of the half-cell Ag\|AgNO₃ is 0.80 volt. The e.m.f. of a cell Cu\|CuSO₄\| AgNO₃\|Ag is therefore 0.46 volt. Electronics and Electrical Engineering See electrochemical series. Geology and Earth Sciences See oxidation potential; potential electrode.
随便看	logarithmic plot logarithmic plotting logarithmic potentiometer logarithmic resistor logarithmic scale logarithmic search algorithm logarithmic series logarithmic spiral log file log file analysis logging logic logical logical address logical atomism logical calculus logical clock logical cohesion logical connective logical consequence logical constants logical construction logical empiricism logical encoding logical expression