A chemical reaction of known stoichiometry
can be written in general as:
For the reaction products Y and Z the numbers
are known as the stoichiometric
, for Y and Z respectively.
For the reactants the stoichiometric
numbers are the negatives of the numbers appearing in the equation; for example the
for the reactant A is
In other words, the stoichiometric
numbers are positive for products and negative for reactants.
PAC, 1996, 68, 149
(A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC
on page 187
PAC, 1996, 68, 957
(Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations
on page 993
PAC, 1996, 68, 1167
(Pesticides report 36. Glossary of terms relating to pesticides (IUPAC Recommendations
on page 1168
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook