Kemija - 2023./24. jesen - 35.

A. $\mathrm{F}\mathrm{e}(\mathrm{s})+{\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\to {\mathrm{F}\mathrm{e}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{H}}_2(\mathrm{g})\backslash mathrm\{Fe\}(\backslash mathrm\{s\})+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{FeSO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{g\})$

B. $\mathrm{Z}\mathrm{n}(\mathrm{s})+{\mathrm{H}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\to {\mathrm{Z}\mathrm{n}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{H}}_2(\mathrm{g})\backslash mathrm\{Zn\}(\backslash mathrm\{s\})+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{ZnSO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{g\})$

C. $\mathrm{Cu}(\mathrm{s})+\mathrm{FeSO}_{4}(\mathrm{aq}) \rightarrow \mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s})$

D. $\mathrm{M}\mathrm{g}(\mathrm{s})+{\mathrm{Z}\mathrm{n}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\to {\mathrm{M}\mathrm{g}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+\mathrm{Z}\mathrm{n}(\mathrm{s})\backslash mathrm\{Mg\}(\backslash mathrm\{s\})+\backslash mathrm\{ZnSO\}\_\{4\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{MgSO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{Zn\}(\backslash mathrm\{s\})$