Question
One mole of an ideal gas goes from an initial state A to final state B via two processes. It first undergoes isothermal expansion from volume V to 3V and then its volume is reduced from 3V to V at constant pressure. The correct p-V diagram representing the two processes is
Solution
D.
According to the question, first gas goes from volume V to 3V and after this volume is reduced from 3V to V at constant pressure. In the isothermal expansion, the p-V curve is a rectangular hyperbola.
