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Bulletin of the MRSU / Section "Pedagogy" / 2012 № 2.

 

Kartashov S.N., Klimachev D.A.

To a question about electrolysis water solutions of electrolits // Bulletin of the Moscow Regional State University (electronic journal) [Bulletin of the Moscow Regional State University (electronic journal)]. 2012. no. 2. pp. 51-55.


UDC Index: 372.854

Date of publication:

The full text of the article

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Abstract


The article analyzes the most common mistakes when writing the equations of the electrolysis of aqueous solutions of electrolytes. The mistakes under analysis are typical for those who take the entrance test on chemistry at Moscow State Regional University, and the tasks of Moscow region Contest on Chemistry for schoolchildren. The article covers the problems of describing the processes of electrolysis using insoluble (inert) and soluble electrodes. The authors show the possible processes occurring at the cathode and anode in the electrolysis of aqueous solutions of electrolytes. The article describes the processes of electrolysis of solutions containing a mixture of cations. Much attention is given to the tasks to quantify the substances released at the electrodes.

Key words


electrolysis, water solutions, electrolits, anode, cathode.

List of references


1. Kudrjavcev A.A. Sostavlenie himicheskih uravnenij. - M.: Vysshaja shkola, 1979.
2. Fioshin V.N., Pavlov V. N. Jelektroliz v neorganicheskoj himii. - M.: Nauka, 1973.
3. Homchenko I.G. Sbornik zadach i uprazhnenij po himii. - M.: Vysshaja shkola, 1989

Лицензия Creative Commons