Kemija - 2018. jesen, 22.

${\mathrm{H}}_3{\mathrm{O}}^{+}\backslash mathrm\{H\}\_\{3\}\; \backslash mathrm\{O\}^\{+\}$

${\mathrm{O}\mathrm{H}}^{-}\backslash mathrm\{OH\}^\{-\}$

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{O}\mathrm{H}\backslash mathrm\{C\}\_\{2\}\; \backslash mathrm\{H\}\_\{5\}\; \backslash mathrm\{OH\}$

${\mathrm{C}\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}\backslash mathrm\{CH\}\_\{3\}\; \backslash mathrm\{COOH\}$