https://doi.org/10.1351/goldbook.R05147

The rate of conversion for a reaction occurring in a closed system is defined as the time derivative of the @E02283@: \[\overset{\text{.}}{\xi }=\frac{\mathrm{d}\xi }{\mathrm{d}t}\] In view of the definition of @E02283@ it follows that with reference to any species in a reaction showing time-independent @S06026@ \[\overset{\text{.}}{\xi }=\frac{\mathrm{d}\xi }{\mathrm{d}t}=\frac{1}{\nu _{i}}\ \frac{\mathrm{d}n_{i}}{\mathrm{d}t}\] where \(n_{i}\) is the amount of the species at any time and \(\nu _{i}\) is its @S06021@ @C01124@.

Green Book, 2

PAC, 1992,

PAC, 1996,

PAC, 1996,

*Sources:*Green Book, 2

^{nd}ed., p. 55 [Terms] [Book]

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*64*, 1569. (

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PAC, 1996,

*68*, 149. (

*A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)*) on page 180 [Terms] [Paper]

PAC, 1996,

*68*, 957. (

*Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)*) on page 989 [Terms] [Paper]