Chemistry - Chemical Equilibrium Question with Solution | TestHub

In the expression for equilibrium constant species in solid state are not written (i.e, their molar concentrations are taken as 1)
${\mathrm{P}}_4\left(\mathrm{s}\right)+5\mathrm{O}2\left(\mathrm{s}\right)\stackrel{}{\rightleftharpoons }{\mathrm{P}}_4{\mathrm{O}}_{10}\left(\mathrm{s}\right)$
So${\mathrm{K}}_{\mathrm{C}}=\frac{1}{{\left[{\mathrm{O}}_2\right]}^5}$