Chapter 18.2, Problem 3RC

Interpretation Introduction

Interpretation: the value of $\Delta S$ for the given system is to be identified from the given options.

Concept introduction:

Spontaneous process indicates the changes of a system without an outside intervention, that means naturally and unaided.

In Spontaneous process, energy transfer from higher concentration to lower, or the energy is dispersed.

Entropy (S) is the quantity to measure the dispersal of energy in the spontaneous processes.

According to second law of thermodynamics, in a spontaneous process, the $\Delta S$ is greater than zero.

Equation for finding $\Delta S$ from $q_{rev}$ and temperature (K) is,

$\Delta S=\frac{q_{rev}}{T}$