Kemija - 2025./26. ljeto - 26.

${\mathrm{C}\mathrm{l}}_2+2{\mathrm{e}}^{-}\to 2{\mathrm{C}\mathrm{l}}^{-}\backslash mathrm\{Cl\}\_\{2\}+2\; \backslash mathrm\{e\}^\{-\}\; \backslash rightarrow\; 2\; \backslash mathrm\{Cl\}^\{-\}$

$2{\mathrm{C}\mathrm{l}}^{-}\to {\mathrm{C}\mathrm{l}}_2+2{\mathrm{e}}^{-}2\; \backslash mathrm\{Cl\}^\{-\}\; \backslash rightarrow\; \backslash mathrm\{Cl\}\_\{2\}+2\; \backslash mathrm\{e\}^\{-\}$

${\mathrm{M}\mathrm{n}}^{2+}+12{\mathrm{H}}_2\mathrm{O}\to {\mathrm{M}\mathrm{n}\mathrm{O}}_4^{-}+5{\mathrm{e}}^{-}+8{\mathrm{H}}_3{\mathrm{O}}^{+}\backslash mathrm\{Mn\}^\{2+\}+12\; \backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}\; \backslash rightarrow\; \backslash mathrm\{MnO\}\_\{4\}^\{-\}+5\; \backslash mathrm\{e\}^\{-\}+8\; \backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}$

${\mathrm{M}\mathrm{n}\mathrm{O}}_4^{-}+5{\mathrm{e}}^{-}+8{\mathrm{H}}_3{\mathrm{O}}^{+}\to {\mathrm{M}\mathrm{n}}^{2+}+12{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{MnO\}\_\{4\}^\{-\}+5\; \backslash mathrm\{e\}^\{-\}+8\; \backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}\; \backslash rightarrow\; \backslash mathrm\{Mn\}^\{2+\}+12\; \backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$