CHEMISTRY GLOSSARY
dry cell → suhi članak
Dry cell or Leclanche cell is a primary cell having a zinc anode, a carbon (graphite) cathode surrounded by manganese dioxide, and a paste containing ammonium chloride as electrolyte. The electromotive force (emf) produced by a dry cell is 1.5 V. Dry cell is not reversible and therefore have a limited operating life. It is invented by the French engineer Georges Leclanché (1839.-1882.) in 1866.
electric cell → električni članak
Electric cell (battery) is a device that is capable of changing some form of energy, such as chemical, nuclear or radiant energy, into electricity. A solar cell, for example, consists of a semiconductor junction that converts sunlight directly into electricity. A dry cell battery converts chemical energy into electricity.
irreversible galvanic cell → nepovrativi galvanski članak
Irreversible galvanic cell is a chemical source of direct current, in which reactions that take place on the electrodes are irreversible.
Bunsen’s cell → Bunsenov članak
Bunsen’s cell is a primary cell devised by Robert W. Bunsen consisting of a zinc cathode immersed in dilute sulphuric acid and carbon anode immersed in concentrated nitric acid. The electrolytes are separated by a porous pot. The cell gives an e.m.f. of about 1.9 V.
reversible cell → povrativi članak
Reversible cell is an electrical cell the chemical action in which can be reversed by passing through it a current opposite in direction to that generated by the cell.
unit cell → jedinična ćelija
Unit cell is the smallest fragment of the structure of a solid that by repetition can generate the entire structure.
cell potential → potencijal članka
Cell potential (E) is difference between anode and cathode potential. If the cell potential is positive, then the reaction is spontaneous.
Daniell cell → Daniellov članak
In 1836 the British chemist John Frederic Daniell (1790-1845) proposed an improved electric cell that supplied an even current during continuous operation. Daniell cell consisted of a glass jar containing copper and zinc electrodes, each immersed in their respective acidic sulphate solutions. The two solutions were separated by a porous clay cylinder separator. It was a galvanic cell in which the spontaneous electrodissolution of zinc and electroplating of copper provided the electrical current.
Zn(s) |
→ | Zn2+ + 2e- |
+0.763 V |
Cu2+ + 2e- |
→ | Cu(s) |
+0.337 V |
Zn(s) + Cu2+ |
→← | Zn2+ + Cu(s) |
+1.100 V |
Citing this page:
Generalic, Eni. "Leclanche cell." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
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