[tex]2NO_{2} +4H_{2} =N_{2} +4H_{2} O[/tex]
[tex]3BeO + N_{2} + 3C=Be_{3} N_{2} +3CO[/tex]
[tex]3Be_{2}C+2N_{2} =2Be_{3} N_{2}+3C[/tex]
[tex]5Mg_{3} N_{2}+6PCl_{5} =15MgCl_{2} +2P_{3} N_{2}[/tex]
[tex]4NH_{3} +7O_{2}=4NO_{2} + 6H_{2}O[/tex]
[tex]Fe_{2} O_{3} +3H_{2} =2Fe+3H_{2}O[/tex]