Electrochemistry
Electrolysis.
Electrolysis refers to the decomposition of a substance by an electric current. The electrolysis of sodium and potassium hydroxides, first carried out in 1808 by Sir Humphrey Davey, led to the discovery of these two metallic elements and showed that these two hydroxides which had previously been considered un-decomposable and thus elements.
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Faraday Law
FARADAY LAWAmount of substance produce of each electrode is directly proportional to quantity of charge flowing through the cell Also called Faraday's First Law of electrolysis. CALCULATING USING FARADAY'S LAWMain stepsBalance half reaction to...
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Industrial Electrolytic Processes.
The chloralkali industry The electrolysis of brine is carried out on a huge scale for the industrial production of chlorine and caustic soda (sodium hydroxide). Because the reduction potential of Na+ is much higher than that of water, the latter substance...
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Galvanic Cells
This arrangement is called a Galvanic cell. A typical cell might consist of two pieces of metal, one zinc and the other copper, each immersed each in a solution containing a dissolved salt of the corresponding metal. The two...
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Electrochemistry
Learning Objectives(a) describe and explain redox processes in terms of electron transfer and/or of changes in oxidation number (oxidation state) (b) define the terms: (i) standard electrode (redox) potential (ii)...
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Electrochemistry : 10.3 : Electrolysis Cell
VOLTAN CELL VS ELECTRIOLYSIS CELL . Voltaic cell :use a spontaneous reaction to generate electric energy. Electrolysis :use electric energy to drive non- spontaneous energy. VOLTAIC CELL. ELECTROLYTICelectrons generate...
Electrochemistry