Thermochemistry & Thermodynamics
5 terms
Thermochemical Equation
Thermochemistry & Thermodynamics
kJ/mol
A balanced chemical equation that also states the enthalpy change for the amounts shown.
aA + bB → cC, ΔH = x kJ
Thermodynamic Equilibrium
Thermochemistry & Thermodynamics
kJ/mol
The state in which a system's properties no longer change with time and all driving forces are balanced.
ΔG = 0
Thermodynamics
Thermochemistry & Thermodynamics
J
The branch of science dealing with energy, its transformations, and the direction in which processes occur.
Third Law of Thermodynamics
Thermochemistry & Thermodynamics
J/(mol·K)
The entropy of a perfect crystalline substance approaches zero as the temperature approaches absolute zero.
S → 0 as T → 0 K
Trouton's Rule
Thermochemistry & Thermodynamics
J/(mol·K)
The empirical observation that the entropy of vaporisation of many liquids is close to 88 J/(mol·K) at their boiling point.
ΔS_vap = ΔH_vap / T_b ≈ 88