If for the reaction
\[
\text{CCL}_3(g) \rightarrow \text{C}(g) + 3\text{Cl}(g),
\]
the following data is given:
\[
\Delta H^\circ_{\text{CCL}_3(l)} = 30 \, \text{kJ mol}^{-1}, \, \text{vap} = \text{vaporization}
\]
\[
\Delta H^\circ_{\text{CCl}_3} = -136.0 \, \text{kJ mol}^{-1}, \, f = \text{formation}
\]
\[
\Delta H^\circ_{\text{C}} = 714.0 \, \text{kJ mol}^{-1}, \, a = \text{atomization}
\]
\[
\Delta H^\circ_{\text{Cl}} = 242.0 \, \text{kJ mol}^{-1}, \, a = \text{atomization}
\]
The bond mean enthalpy of C-Cl in CCl\(_4\)(l) is:
\[
\text{CCL}_4(g) \rightarrow \text{C}(g) + 3\text{Cl}(g) \text{ gives the bond mean enthalpy.}
\]
