Symbols Used to Denote a Chemical Reactions and Process or Condition
Explanation of symbols used as subscripts or superscripts to tell more about the type of chemical reaction, process or condition.
See also Thermodynamic Terms, Functions and Relations
| Subscript Symbol | Process |
|---|---|
| ads | adsorption |
| at | atomization |
| c | combustion reaction |
| dil | dilution (of a solution) |
| dpl | displacement |
| f | formation reaction |
| fus | melting, fusion (solid → liquid) |
| imm | immersion |
| mix | mixing of fluids |
| r | reaction in general |
| sol | solution (of solute in solvent) |
| sub | sublimation (solid → gas) |
| trs | transition (between two phases) |
| vap | vaporization, evaporation (liquid → gas) |
| Superscript Symbol | Process |
| app | apparent |
| ≠, ‡ | activated complex, transition state |
| E | excess quantity |
| id | ideal |
| ∞ | infinite dilution |
| * | pure substance |
| °, θ | standard |
Examples of use could be:
ΔGr : Change in Gibbs free energy by (a given) reaction,
ΔHsol : Change in enthalpy by (a given) solution
ΔSvap : Change in entropy by (a given) evaporation
pθ : Pressure at standard state (normally 1 bar)
