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.
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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)
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