Chapter 2, Problem 2.12NP

Interpretation Introduction

Interpretation:The value of q, w, $\text{ΔU}$ and $\text{ΔH}$ for the system of an adiabatic reversible expansion where number of moles of ideal gas is 1.75 mol. The initial temperature is 27.0°C and the work done on the surroundings is 1300 J.

Concept Introduction: In thermodynamics, a reversible process can be defined as the process which can be reversed back to its original state.

Hence in reversible processes, both the system and surroundings are returned to their initial states. In general, all reversible processes are ideal processes and cannot occur naturally.

On the contrary, an irreversible process cannot come back to its initial condition. All spontaneous processes in nature are irreversible processes.

In an adiabatic process the heat change is zero therefore the work done will be equal to the change in the internal energy.