Chapter 6, Problem 56E

Use standard enthalpies of formation to calculate $\Delta H_{\text{rxn}}^{\text{o}}$ for each reaction.

a. ${\text{2H}}_{\text{2}}\text{S(}g{\text{)+3O}}_{\text{2}}\text{(}g\text{)}\to {\text{2H}}_{\text{2}}\text{O(}l{\text{)+2SO}}_{\text{2}}\text{(}g\text{)}$

b. ${\text{SO}}_{\text{2}}\text{(}g\text{)+}\frac{\text{1}}{\text{2}}{\text{O}}_{\text{2}}\text{(}g\text{)}\to {\text{SO}}_{\text{3}}\text{(}g\text{)}$

c. $\text{C(}s{\text{)+H}}_{\text{2}}\text{O(}g\text{)}\to \text{CO(}g{\text{)+H}}_{\text{2}}\text{(}g\text{)}$

d. ${\text{N}}_{\text{2}}{\text{O}}_{\text{4}}\text{(}g{\text{)+4H}}_{\text{2}}\text{(}g\text{)}\to {\text{N}}_{\text{2}}\text{(}g{\text{)+4H}}_{\text{2}}\text{O(}g\text{)}$