PCl3( g)+Cl2( g)⇌PCl5( g)\mathrm{PCl}_{3}(\mathrm{~g})+\mathrm{Cl}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{PCl}_{5}(\mathrm{~g})PCl3( g)+Cl2( g)⇌PCl5( g)
2NH3( g)⇌N2( g)+3H2( g)2 \mathrm{NH}_{3}(\mathrm{~g}) \rightleftharpoons \mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g})2NH3( g)⇌N2( g)+3H2( g)
2HI(g)⇌H2( g)+I2( g)2 \mathrm{HI}(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})2HI(g)⇌H2( g)+I2( g)
COCl2( g)⇌CO(g)+Cl2( g)\mathrm{COCl}_{2}(\mathrm{~g}) \rightleftharpoons \mathrm{CO}(\mathrm{g})+\mathrm{Cl}_{2}(\mathrm{~g})COCl2( g)⇌CO(g)+Cl2( g)
