Chapter 12, Problem 28E

Use the standard entropy data in Appendix G to determine the change in entropy for each of the following reactions. All the processes occur at the standard conditions and 25°C.

(a) ${\text{MnO}}_2(s)\to \text{Mn}(s)+{\text{O}}_2(g)$

(b) ${\text{H}}_{\text{2}}(g)+{\text{Br}}_{\text{2}}(l)\to \text{2HBr}(g)$

(c) $\text{Cu}(s)+S(g)\to CuS(s)$

(d) $\text{2LiOH}(s){\text{+CO}}_{\text{2}}(g)\to {\text{Li}}_2{\text{CO}}_3(s){\text{+H}}_{\text{2}}\text{O}(g)$

(e) ${\text{CH}}_{\text{4}}(g)+{\text{O}}_{\text{2}}(g)\to \text{C}(s,{\text{graphite)+2H}}_{\text{2}}\text{O}(g)$

(f) ${\text{CS}}_{\text{2}}(g)+{\text{3Cl}}_{\text{2}}(g)\to {\text{CCl}}_{\text{4}}(g)+{\text{S}}_{\text{2}}{\text{Cl}}_{\text{2}}(g)$