Use adaptive quiz-based learning to study this topic faster and more effectively.

# Isobaric process

p-V graph showing a different thermodynamic processes (1: isothermal, 2: isochoric, 3: isobaric, 4: adiabatic).

In an isobaric process the pressure is kept constant (i.e. $\Delta p=0$). The work done by the gas is given by $p\Delta V$.

The change in internal energy during an isobaric process is given by $\Delta U=Q-p\Delta V$.

The p-V graph of an isobaric process is a horizontal line.

$p=$pressure; $Q=$heat supplied; $T=$temperature; $\Delta U=$change in internal energy; $V=$volume; $W=$work done