Chemistry - Thermochemistry Question with Solution | TestHub

$\mathrm{Si}(\mathrm{g})+4\mathrm{Cl}(\mathrm{g})\to {\mathrm{SiCl}}_4(\mathrm{g})$ gives 4 x BE(Si-Cl). To build this cycle we need $\Delta H_f$ of ${\mathrm{SiCl}}_4(\mathrm{l})$, $\Delta H_{vap}$ of ${\mathrm{SiCl}}_4$ (to reach the gas), $\Delta H_f$ of Si(g) (atomised silicon) and $\mathrm{BE}({\mathrm{Cl}}_2)$ (atomised chlorine).

Answer: (D).