Chapter 18.2, Problem 1PPA

Practice ProblemATTEMPT

Calculate the standard entropy change for the following reactions at $\text{25}°\text{C}\text{.}$ Predict first whether each one will be positive, negative, or too close to call.

$\begin{array}{l}\text{(a)}\\ {\text{2CO}}_{\text{2}}\text{(}g\text{) }\to \text{ 2CO(}g{\text{) + O}}_{\text{2}}\text{(}g\text{)}\\ \text{(b)}\\ {\text{3O}}_{\text{2}}\text{(}g\text{) }\to {\text{ 2O}}_{\text{3}}\text{(}g\text{)}\\ \text{(c)}\\ {\text{2NaHCO}}_{\text{3}}\text{(}s\text{) }\to {\text{ Na}}_{\text{2}}{\text{CO}}_{\text{3}}\text{(}s{\text{) + H}}_{\text{2}}\text{O(}l{\text{) + CO}}_{\text{2}}\text{(}g\text{)}\end{array}$