Chapter 18, Problem 18.88QP

Interpretation Introduction

Interpretation:

The change in entropy in the sublimation process ${\text{(ΔS}}_{\text{sub}})$ of ${\text{CO}}_{\text{2}}$ has to be calculated.

Concept Information:

Entropy is a thermodynamic quantity, which is the measure of randomness in a system.  The term entropy is useful in explaining the spontaneity of a process.  The second law of thermodynamics says that entropy of the universe is increasing.  The change in entropy in a phase transition reaction can be found by using the following equation.

${\text{ΔS}}_{\text{sys}}\text{=}\frac{{\text{ΔΗ}}_{\text{sys}}}{\text{T}}$

Where,

  ${\text{ΔΗ}}_{\text{sys}}$ is the change in enthalpy of the system

  $\text{T}$ is the absolute value of the temperature.