Qc=[NH3]2[ N2][H2]3\mathrm{Q}_{\mathrm{c}}=\frac{\left[\mathrm{NH}_{3}\right]^{2}}{\left[\mathrm{~N}_{2}\right]\left[\mathrm{H}_{2}\right]^{3}}Qc=[ N2][H2]3[NH3]2
Qc=[PCl3][Cl2][PCl5]\mathrm{Q}_{\mathrm{c}}=\frac{\left[\mathrm{PCl}_{3}\right]\left[\mathrm{Cl}_{2}\right]}{\left[\mathrm{PCl}_{5}\right]}Qc=[PCl5][PCl3][Cl2]
Qc=[H2][I2][HI]2\mathrm{Q}_{\mathrm{c}}=\frac{\left[\mathrm{H}_{2}\right]\left[\mathrm{I}_{2}\right]}{[\mathrm{HI}]^{2}}Qc=[HI]2[H2][I2]
Qc=[NO2]2[NO2]2[O2]\mathrm{Q}_{\mathrm{c}}=\frac{\left[\mathrm{NO}_{2}\right]^{2}}{\left[\mathrm{NO}^{2}\right]^{2}\left[\mathrm{O}_{2}\right]}Qc=[NO2]2[O2][NO2]2
