Kemija - 2013./14. jesen - 30.

A. ${\mathrm{N}\mathrm{a}}_2{\mathrm{O}}_2(\mathrm{s})\rightleftharpoons 2\mathrm{N}\mathrm{a}(\mathrm{l})+{\mathrm{O}}_2(\mathrm{g})\backslash mathrm\{Na\}\_\{2\}\; \backslash mathrm\{O\}\_\{2\}(\backslash mathrm\{~s\})\; \backslash rightleftharpoons\; 2\; \backslash mathrm\{Na\}(\backslash mathrm\{l\})+\backslash mathrm\{O\}\_\{2\}(\backslash mathrm\{~g\})$

B. $2{\mathrm{H}}_2\mathrm{S}(\mathrm{g})\rightleftharpoons 2{\mathrm{H}}_2(\mathrm{g})+{\mathrm{S}}_2(\mathrm{g})2\; \backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{~S\}(\backslash mathrm\{~g\})\; \backslash rightleftharpoons\; 2\; \backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{~g\})+\backslash mathrm\{S\}\_\{2\}(\backslash mathrm\{~g\})$

C. $\mathrm{F}\mathrm{e}\mathrm{O}(\mathrm{s})+\mathrm{C}\mathrm{O}(\mathrm{g})\rightleftharpoons \mathrm{F}\mathrm{e}(\mathrm{s})+{\mathrm{C}\mathrm{O}}_2(\mathrm{g})\backslash mathrm\{FeO\}(\backslash mathrm\{s\})+\backslash mathrm\{CO\}(\backslash mathrm\{g\})\; \backslash rightleftharpoons\; \backslash mathrm\{Fe\}(\backslash mathrm\{s\})+\backslash mathrm\{CO\}\_\{2\}(\backslash mathrm\{~g\})$

D. $3{\mathrm{H}}_2(\mathrm{g})+{\mathrm{N}}_2(\mathrm{g})\rightleftharpoons 2{\mathrm{N}\mathrm{H}}_3(\mathrm{g})3\; \backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{~g\})+\backslash mathrm\{N\}\_\{2\}(\backslash mathrm\{~g\})\; \backslash rightleftharpoons\; 2\; \backslash mathrm\{NH\}\_\{3\}(\backslash mathrm\{~g\})$