Isobaric Process
A thermodynamic change in state occurring under constant pressure conditions.
Governing formula
ΔP = 0, W = P ΔV, Q = ΔH = n Cp ΔT
SI unit
J
In depth
Work done during isobaric expansion equals pressure times volume change (W = P ΔV). Heat added increases both internal energy and performs boundary work.
Examples in the real world
Water boiling in an open pot at atmospheric pressure expanding into steam as heat is supplied.