Galvanic cells: anodes, cathodes, signs and charges
Issue 341 | Page 107 | Published Jun 2011
Description
Electrochemistry is a difficult subject for students at school and beyond and even for their teachers. This article explores the difficult 'truth' that, when a current flows from a galvanic cell, positive ions within the cell electrolyte move towards the electrode labelled positive. This seems to contravene the basic rule that like charges repel one another.
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