Kemija - 2015./16. jesen - 16.

A. $\mathrm{F}\mathrm{e}(\mathrm{s})+{\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\to \mathrm{C}\mathrm{u}(\mathrm{s})+{\mathrm{F}\mathrm{e}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\backslash mathrm\{Fe\}(\backslash mathrm\{s\})+\backslash mathrm\{CuSO\}\_\{4\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{Cu\}(\backslash mathrm\{s\})+\backslash mathrm\{FeSO\}\_\{4\}(\backslash mathrm\{aq\})$

B. $\mathrm{C}\mathrm{u}(\mathrm{s})+{\mathrm{F}\mathrm{e}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\to \mathrm{F}\mathrm{e}(\mathrm{s})+{\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\backslash mathrm\{Cu\}(\backslash mathrm\{s\})+\backslash mathrm\{FeSO\}\_\{4\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{Fe\}(\backslash mathrm\{s\})+\backslash mathrm\{CuSO\}\_\{4\}(\backslash mathrm\{aq\})$

C. $\mathrm{C}\mathrm{u}(\mathrm{s})+2{\mathrm{C}\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\mathrm{H}(\mathrm{a}\mathrm{q})\to {\mathrm{H}}_2(\mathrm{g})+{\left({\mathrm{C}\mathrm{H}}_3\mathrm{C}\mathrm{O}\mathrm{O}\right)}_2\mathrm{C}\mathrm{u}(\mathrm{a}\mathrm{q})\backslash mathrm\{Cu\}(\backslash mathrm\{s\})+2\; \backslash mathrm\{~CH\}\_\{3\}\; \backslash mathrm\{COOH\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{g\})+\backslash left(\backslash mathrm\{CH\}\_\{3\}\; \backslash mathrm\{COO\}\backslash right)\_\{2\}\; \backslash mathrm\{Cu\}(\backslash mathrm\{aq\})$

D. $\mathrm{C}\mathrm{u}(\mathrm{s})+2\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}(\mathrm{a}\mathrm{q})\to 2\mathrm{N}\mathrm{a}(\mathrm{s})+\mathrm{C}\mathrm{u}(\mathrm{O}\mathrm{H}{)}_2(\mathrm{s})\backslash mathrm\{Cu\}(\backslash mathrm\{s\})+2\; \backslash mathrm\{~NaOH\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~Na\}(\backslash mathrm\{s\})+\backslash mathrm\{Cu\}(\backslash mathrm\{OH\})\_\{2\}(\backslash mathrm\{s\})$