Preferred Label : standard reaction quantities;
IUPAC definition : Infinitesimal changes in thermodynamic functions with extent of reaction divided by
the infinitesimal increase in the extent when all the reactants and products are in
their standard states. For the quantity X they should be denoted by Δ r X , but usually
only Δ X is used. For specific types of reactions the subscript r is replaced by:
f for formation, c for combustion, a for atomization and superscript ‡ for activation.;
Origin ID : S05923;
See also
Infinitesimal changes in thermodynamic functions with extent of reaction divided by
the infinitesimal increase in the extent when all the reactants and products are in
their standard states. For the quantity X they should be denoted by Δ r X , but usually
only Δ X is used. For specific types of reactions the subscript r is replaced by:
f for formation, c for combustion, a for atomization and superscript ‡ for activation.
