Chapter 6, Problem 6.67P

Reaction of gaseous CIF with ${\text{F}}_2$ yields liquid $\text{C}\text{I}{\text{F}}_3,$ an important fluorinating agent. Use the following thermochemical equations to calculate $\text{Δ}{\text{H}}_{rxn}^0$ for this reaction:

1. $2\text{C}\text{I}\text{F}(g)+{\text{O}}_2(g)\to \text{C}{\text{l}}_2\text{O}(g)+\text{O}{\text{F}}_2(g)\text{Δ}{\text{H}}_{rxn}^o=167.5\text{kJ}$ $2{\text{F}}_2(g)+{\text{O}}_2(g)\to 2\text{O}{\text{F}}_2(g)\text{Δ}{\text{H}}_{rxn}^o=-43.5\text{kJ}$ $2\text{C}\text{I}{\text{F}}_3(\text{l})+2{\text{O}}_2(g)\to \text{C}{\text{l}}_2\text{O}(g)+3\text{O}{\text{F}}_2\text{(g) }\text{Δ}{\text{H}}_{rxn}^o=394.1\text{kJ}$