Chapter 5, Problem 5.12NP

Interpretation Introduction

Interpretation:

The entropy change associated with the transformation of 1.10 moles of N₂ gas initially at 20.5 C and 6.20 bar pressure to 215 C and 1.75 bar needs to be calculated

Concept Introduction:

The entropy change associated with the expansion of a from an initial temperature and pressure of T_i and P_i to a final temperature and pressure of T_f and P_f respectively, is given by the following equation:

  $\text{ΔS = -nRln}\frac{{\text{P}}_{\text{f}}}{{\text{P}}_{\text{i}}}\text{ + n}{\displaystyle \underset{\text{T1}}{\overset{\text{T2}}{\int }}\frac{{\text{C}}_{\text{P}}}{\text{T}}}\text{ dT ------(1)}$