Kemija - 2013./14. ljeto - 34.

A. ${\mathrm{H}}_3{\mathrm{O}}^{+}+{\mathrm{O}\mathrm{H}}^{-}\to 2{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}+\backslash mathrm\{OH\}^\{-\}\; \backslash rightarrow\; 2\; \backslash mathrm\{~H\}\_\{2\}\; \backslash mathrm\{O\}$

B. $\mathrm{H}\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}+{\mathrm{C}\mathrm{H}}_3\mathrm{O}\mathrm{H}\to {\mathrm{H}\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{C}\mathrm{H}}_3+{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{HCOOH\}+\backslash mathrm\{CH\}\_\{3\}\; \backslash mathrm\{OH\}\; \backslash rightarrow\; \backslash mathrm\{HCOOCH\}\_\{3\}+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$

C. $\mathrm{H}\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}+\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}\to \mathrm{H}\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{N}\mathrm{a}+{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{HCOOH\}+\backslash mathrm\{NaOH\}\; \backslash rightarrow\; \backslash mathrm\{HCOONa\}+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$

D. ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{O}\mathrm{H}+\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}\to {\mathrm{C}}_6{\mathrm{H}}_5\mathrm{O}\mathrm{N}\mathrm{a}+{\mathrm{H}}_2\mathrm{O}\backslash mathrm\{C\}\_\{6\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{OH\}+\backslash mathrm\{NaOH\}\; \backslash rightarrow\; \backslash mathrm\{C\}\_\{6\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{ONa\}+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}$