Chapter 5.9, Problem 1PPA

Practice ProblemATTEMPT

Use the following data to calculate $\Delta H_{\text{f}}^{\text{o}}{\text{ for CS}}_{\text{2}}\text{(}l\text{):}$

$\begin{array}{l}{\text{C(graphite)+O}}_{\text{2}}\text{(}g\text{)}\to {\text{CO}}_{\text{2}}\text{(}g\text{) Δ}{H}_{\text{rxn}}^{\text{o}}\text{= –393}\text{.5 kJ/mol}\\ {\text{S(rhombic)+O}}_{\text{2}}\text{(}g\text{)}\to {\text{SO}}_{\text{2}}\text{(}g\text{) Δ}{H}_{\text{rxn}}^{\text{o}}\text{= –296}\text{.4 kJ/mol}\\ {\text{CS}}_{\text{2}}\text{(}l{\text{)+3O}}_{\text{2}}\text{(}g\text{)}\to {\text{CO}}_{\text{2}}\text{(}g{\text{)+2SO}}_{\text{2}}\text{(}g\text{) Δ}H\text{=}\text{ –1073}\text{.6 kJ/mo;}\end{array}$