Galvanic Cells

Currently, it is not possible the potential difference between a strip of metal and a solution where the metal is dipped in. This arrangement is known as a galvanic cell and the situation can be represented as an oxidation-reduction (redox) reaction equation. A typical call consists of two strips of metal (one zinc and the other copper) and they are usually dipped in a solution containing salt from the corresponding metal. The two sides are separated by a porous barriers; this is because it avoids the two mixers from mixing at a fast rate but still allows the ions to diffuse from both sides. The set up can be seen in the picture.

File:C-cell-with-no-cation-flow.png

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