Chapter 18.3, Problem 2CP

For which of the following chemical reactions is $\Delta S$ negative? (Select all that apply.)

$\begin{array}{l}\text{a})\\ {\text{2O}}_3(g)\to {\text{ 3O}}_{\text{2}}\text{(}g\text{)}\\ \text{b)}\\ \text{4Fe(}s{\text{) + 3O}}_{\text{2}}\text{(}g\text{) }\to {\text{ 2Fe}}_{\text{2}}{\text{O}}_{\text{3}}\text{(}s\text{)}\\ \text{c)}\\ {\text{2H}}_{\text{2}}{\text{O}}_{\text{2}}(aq)\to {\text{ 2H}}_{\text{2}}\text{O(}l{\text{) + O}}_{\text{2}}\text{(}g\text{)}\\ \text{d})\\ 2\text{Li}(s){\text{ + 2H}}_{\text{2}}\text{O(}l\text{) }\to \text{ 2LiOH(}aq{\text{) + H}}_{\text{2}}\text{(}g\text{)}\\ \text{e})\\ 2{\text{NH}}_3\text{(}g\text{) }\to {\text{ N}}_{\text{2}}\text{(}g{\text{) + 3H}}_{\text{2}}\text{(}g\text{)}\end{array}$