Kemija - 2013./14. ljeto - 38.

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

${\mathrm{B}\mathrm{r}}_2(\mathrm{a}\mathrm{q})\backslash mathrm\{Br\}\_\{2\}(\backslash mathrm\{aq\})$

${\mathrm{B}\mathrm{r}}^{-}(\mathrm{a}\mathrm{q})\backslash mathrm\{Br\}^\{-\}(\backslash mathrm\{aq\})$

${\mathrm{C}\mathrm{l}}^{-}(\mathrm{a}\mathrm{q})\backslash mathrm\{Cl\}^\{-\}(\backslash mathrm\{aq\})$