Entropy of isobaric process


An isobaric process is a thermodynamic process in which the pressure stays constant: ΔP = 0. The heat transferred to the system does work, but also changes the internal energy of the system. This article uses the chemistry sign convention for work, where positive work is work done on the system. For heating or cooling of any system (gas, liquid or solid) at constant pressure from an initial temperature T0 to a final temperature T, the entropy change is as shown here.

Related formulas


ΔSChange in Entropy (J*mole/K)
nnumber of moles (mole)
Cpheat capacity at constant pressure (J/K)
TFinal Temperature (K)
T0Initial Temperature (K)