Coulometry - Wikipedia
网页In analytical electrochemistry, coulometry determines the amount of matter transformed during an electrolysis reaction by measuring the amount of electricity (in coulombs) consumed or produced. It can be used for precision measurements of charge, and the amperes even used to have a coulometric definition.
Coulometry | Electrochemical, Titration, Quantitative Analysis
网页Coulometry, in analytical chemistry, method for determining the quantity of a substance, based on the strict proportionality between the extent of a chemical change and the quantity of electricity involved (Faraday’s law). The quantity of the material to be analyzed can be determined directly by.
24.1: Introduction to Coulometry - Chemistry LibreTexts
网页2022年10月26日 · A coulomb is equivalent to an A•sec; thus, for a constant current, i, the total charge is. Q = ite (24.1.2) (24.1.2) Q = i t e. where te is the electrolysis time. If the current varies with time, as it does in controlled-potential coulometry, then the total charge is.
24: Coulometry - Chemistry LibreTexts
网页There are two forms of coulometry: controlled-potential coulometry, in which we apply a constant potential to the electrochemical cell, and controlled-current coulometry, in which we pass a constant current through the electrochemical cell.
11.3: Coulometric Methods - Chemistry LibreTexts
网页2021年9月12日 · Controlled-Potential Coulometry. The easiest way to ensure 100% current efficiency is to hold the working electrode at a constant potential where the analyte is oxidized or reduced completely and where no potential …
Coulometric Karl Fischer titrators | Metrohm
网页The coulometric method uses electric current to generate the iodine that is needed for the Karl Fischer reaction. Metrohm KF Coulometers apply variable current strengths and pulse lengths, which allows precise "iodine addition" even in the region of the endpoint. Learn more about coulometric KF titration in the application bulletin:
库仑计 - 百度百科
网页库仑计又称 安培 秒计，是可编程 数字电表，采用先进的 微处理器 进行智能控制，对输入的信号经过 CPU 运算处理后，输出当前电池电量的设备。 中文名. 库仑计. 别 名. 安培 秒计 库仑表. 说 明. 可编程数字电表. 应 用. 电镀 、电化学、物联网等. 相关视频. 查看全部. 目录. 1 电表简介. 2 技术指标. 3 电表实例. 电表简介. 播报. 编辑. [化] coulomb meter, coulometer, voltameter. 用来测定电量的装置,和 电解池 的装置相同.使用时,保持 电流 强度不变,测出通 …
Coulometry - an overview | ScienceDirect Topics
网页Coulometry is an electrochemical technique, related to amperometry, where the amount of charge (coulombs) passing between two electrodes is measured. The amount of charge passing between the electrodes is directly proportional to oxidation or reduction of an electroactive substance at one of the electrodes.
Coulometers - an overview | ScienceDirect Topics
网页The coulometer was one of the instruments used by Michael Faraday in his early work on electrolytic conduction. His first law states that the mass of a substance liberated at or dissolved from an electrode is proportional to the quantity of electricity passed.
Datasheet: C30S Compact KF Coulometer - METTLER TOLEDO
网页The all-round Karl Fischer Coulometer Specialist is a flexible and powerful instrument for fast and precise water determination of samples from any industry with water content between 1 ppm and 5%. Color touchscreen with One Click user interface. User-specific home screen with shortcuts for direct access to all routine tasks.