Cell notation

Cell notation

Cell notation in chemistry is a shorthand way of expressing a certain reaction in an electrochemical cell.

The cell anode and cathode (half-cells) are separated by two bars or slashes representing a salt bridge, with the anode on the left and cathode on the right. Individual solid, liquid or aqueous phases within each half-cell are separated by a single bar. Concentrations of dissolved species, in each phase written in parentheses and the state of each phase (usually s, l, g or aq.) is included in a subscript after the species name.

Example: A cell defined by the following half reactions, with 0.010M CdCl2. The mercury does nothing except act as an amalgam.

AgCl(s) + e- --> Ag(s) + Cl-(aq) E = 0.222V

Cd2+(aq) + 2e- --> Cd(s) E = -0.403V

Cd(s), Hg(s) | CdCl2(aq)(0.010M) || AgCl(s) | Ag(s) E = 0.7585V

Note: This cell has a nonstandard potential due to the concentration (0.010M) and the mean activity coefficient (0.513).

Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Cell growth — The term cell growth is used in two different ways in biology. When used in the context of reproduction cells of living cells the phrase cell growth is shorthand for the idea of growth in cell populations by means of cell reproduction. During… …   Wikipedia

  • Electrochemical cell — A demonstration electrochemical cell setup resembling the Daniell cell. The two half cells are linked by a salt bridge carrying ions between them. Electrons flow in the external circuit. An electrochemical cell is a device capable of either… …   Wikipedia

  • Direct carbon fuel cell — A Direct Carbon Fuel Cell (DCFC) is a fuel cell that uses a carbon rich material as a fuel. The cell produces energy by combining carbon and oxygen, which releases carbon dioxide as a by product. The total reaction of the cell is C + O2 → CO2.… …   Wikipedia

  • Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …   Wikipedia

  • Galvanic cell — The Galvanic cell, named after Luigi Galvani, consists of two different metals connected by a salt bridge or a porous disk between the individual half cells. It is also known as a voltaic cell or electrochemical cell. It should not be confused… …   Wikipedia

  • Hermann-Mauguin notation — is used to represent the symmetry elements in point groups, plane groups and space groups. It is named after the German crystallographer Carl Hermann and the French minerologist Charles Victor Mauguin. This notation is sometimes called… …   Wikipedia

  • Index notation — is used in mathematics to refer to the elements of matrices or the components of a vector. The formalism of how indices are used varies according to the discipline. In particular, there are different methods for referring to the elements of a… …   Wikipedia

  • Solid oxide fuel cell — A solid oxide fuel cell (SOFC) is an electrochemical conversion device that produces electricity directly from oxidizing a fuel. Fuel cells are characterized by their electrolyte material and, as the name implies, the SOFC has a solid oxide, or… …   Wikipedia

  • Cytogenetic notation — The following table summarizes symbols and abbreviations used in cytogenetics[1]: Symbol Description , Separates modal number (total number of chromosomes), sex chromosomes, and chromosome abnormalities Loss of a chromosome ( ) Grouping for… …   Wikipedia

  • Potentiometer (measuring instrument) — A potentiometer is an instrument for measuring the potential (voltage) in a circuit. Before the introduction of the moving coil and digital volt meters, potentiometers were used in measuring voltage, hence the meter part of their name. The method …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”