Thermochemistry & Thermodynamics
5 terms
Heat
Thermochemistry & Thermodynamics
J
Energy transferred between a system and its surroundings solely because of a temperature difference.
q = mcΔT
Heat Capacity at Constant Pressure
Thermochemistry & Thermodynamics
J/(mol·K)
The heat needed to raise a system's temperature by one kelvin while pressure is held constant.
C_p = C_V + R (ideal gas)
Heat Capacity at Constant Volume
Thermochemistry & Thermodynamics
J/(mol·K)
The heat needed to raise a system's temperature by one kelvin while its volume is held fixed.
C_V = (∂U/∂T)_V
Helmholtz Free Energy
Thermochemistry & Thermodynamics
kJ/mol
The thermodynamic potential that determines spontaneity at constant temperature and volume.
A = U − TS
Hess's Law
Thermochemistry & Thermodynamics
kJ/mol
The total enthalpy change of a reaction is the same regardless of the route taken, provided the initial and final states are identical.
ΔH_total = ΣΔH_steps