stoichiometric concentration, \(c\)

https://doi.org/10.1351/goldbook.S06023
The @[email protected] concentration, \(c_{\text{B}}\), of a component B in a system is given by the expression: \[c_{\text{B}}=\frac{n_{\text{B}}}{V}\] where \(n_{\text{B}}\) is the @[email protected] @[email protected] of component B in the system and \(V\) is the volume of the system. The component added to the system may dissociate or react with other components to form a series of derived components and only a fraction of the original component may actually exist in a free form in the system. It is therefore essential to distinguish between the @[email protected] concentration and the @[email protected] of the free form of the component in the system. Sometimes @[email protected] quantities are indicated by a subscript (\(_{\text{o}}\)), e.g. \(n_{\text{o,B}}\), \(c_{\text{o,B}}\). In clinical chemistry, the term @[email protected] concentration is rarely employed. Instead, the name of the component is modified to indicate inclusion of the various derived forms, e.g. mixtures of a defined chemical component and its derivatives may be denoted by the plural form of the name of the pure unchanged substance, or to indicate the sum of components specified in individual quantities the specification 'total' may be employed.
Source:
PAC, 1984, 56, 567. (Physicochemical quantities and units in clinical chemistry with special emphasis on activities and activity coefficients (Recommendations 1983)) on page 568 [Terms] [Paper]