Enthalpy

H = U + P V

Heat content at constant pressure. ΔH = Q_p for constant pressure processes.

Variables

H

Enthalpy

Total heat content

J

U

Internal energy

Internal energy

J

P

Pressure

System pressure

Pa

V

Volume

System volume

m³

Derivation

H = U + PV. At constant P: dH = dU + PdV = δQ. So ΔH = Q at constant pressure.

Your notes

0/5000