N2( g)+3H2( g)→2NH3\mathrm{N}_{2}(\mathrm{~g})+3 \mathrm{H}_{2}(\mathrm{~g}) \rightarrow 2 \mathrm{NH}_{3}N2( g)+3H2( g)→2NH3
H2O(g)→H2O(s)\mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{H}_{2} \mathrm{O}(\mathrm{s})H2O(g)→H2O(s)
PCl5( g)→PCl3( g)+Cl2( g)\mathrm{PCl}_{5}(\mathrm{~g}) \rightarrow \mathrm{PCl}_{3}(\mathrm{~g})+\mathrm{Cl}_{2}(\mathrm{~g})PCl5( g)→PCl3( g)+Cl2( g)
H(g)+H(g)→H2( g)\mathrm{H}(\mathrm{g})+\mathrm{H}(\mathrm{g}) \rightarrow \mathrm{H}_{2}(\mathrm{~g})H(g)+H(g)→H2( g)
