Chemistry - Chemical Equilibrium Question with Solution | TestHub

$\underset{\mathrm{\text{at equi}}.\mathrm{\text{ moles }}0.2}{\text{PC}{\text{l}}_5}\rightleftharpoons \underset{0.2}{\text{PC}{\text{l}}_3}\underset{0.2}{+\text{ C}{\text{l}}_2}$
$\mathrm{\text{a}}\mathrm{\text{t}}\mathrm{\text{e}}\mathrm{\text{q}}\mathrm{\text{u}}\mathrm{\text{i}}.\mathrm{\text{c}}\mathrm{\text{o}}\mathrm{\text{n}}\mathrm{\text{c}}\frac{0.2}{2}=0.1\frac{0.2}{2}=0.1\frac{0.2}{2}=0.1$

${\text{K}}_{\text{c}}=\frac{\left[{\text{PCl}}_{\text{3}}\right]\left[{\text{Cl}}_2\right]}{\left[{\text{PCl}}_{\text{3}}\right]}=\frac{0.1\times 0.1}{0.1}=0.1$