Kemija - 2014./15. jesen - 40.

${\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})$

$\mathrm{N}\mathrm{a}\mathrm{C}\mathrm{l}(\mathrm{a}\mathrm{q})\backslash mathrm\{NaCl\}(\backslash mathrm\{aq\})$

${\mathrm{C}\mathrm{u}\mathrm{C}\mathrm{l}}_2(\mathrm{a}\mathrm{q})\backslash mathrm\{CuCl\}\_\{2\}(\backslash mathrm\{aq\})$

$\mathrm{K}\mathrm{O}\mathrm{H}(\mathrm{a}\mathrm{q})\backslash mathrm\{KOH\}(\backslash mathrm\{aq\})$