Kemija - 2024./25. ljeto - 35.

A. $\mathrm{N}\mathrm{i}(\mathrm{s})+{\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\to {\mathrm{N}\mathrm{i}}^{2+}(\mathrm{a}\mathrm{q})+\mathrm{Z}\mathrm{n}(\mathrm{s})\backslash mathrm\{Ni\}(\backslash mathrm\{s\})+\backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{Ni\}^\{2+\}(\backslash mathrm\{aq\})+\backslash mathrm\{Zn\}(\backslash mathrm\{s\})$

B. $\mathrm{F}\mathrm{e}(\mathrm{s})+{\mathrm{M}\mathrm{g}}^{2+}(\mathrm{a}\mathrm{q})\to {\mathrm{F}\mathrm{e}}^{2+}(\mathrm{a}\mathrm{q})+\mathrm{M}\mathrm{g}(\mathrm{s})\backslash mathrm\{Fe\}(\backslash mathrm\{s\})+\backslash mathrm\{Mg\}^\{2+\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{Fe\}^\{2+\}(\backslash mathrm\{aq\})+\backslash mathrm\{Mg\}(\backslash mathrm\{s\})$

C. $\mathrm{S}\mathrm{n}(\mathrm{s})+2{\mathrm{A}\mathrm{g}}^{+}(\mathrm{a}\mathrm{q})\to {\mathrm{S}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})+2\mathrm{A}\mathrm{g}(\mathrm{s})\backslash mathrm\{Sn\}(\backslash mathrm\{s\})+2\; \backslash mathrm\{~Ag\}^\{+\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; \backslash mathrm\{Sn\}^\{2+\}(\backslash mathrm\{aq\})+2\; \backslash mathrm\{~Ag\}(\backslash mathrm\{s\})$

D. $3\mathrm{P}\mathrm{b}(\mathrm{s})+2{\mathrm{A}\mathrm{l}}^{3+}(\mathrm{a}\mathrm{q})\to 3{\mathrm{P}\mathrm{b}}^{2+}(\mathrm{a}\mathrm{q})+2\mathrm{A}\mathrm{l}(\mathrm{s})3\; \backslash mathrm\{~Pb\}(\backslash mathrm\{s\})+2\; \backslash mathrm\{~Al\}^\{3+\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 3\; \backslash mathrm\{~Pb\}^\{2+\}(\backslash mathrm\{aq\})+2\; \backslash mathrm\{~Al\}(\backslash mathrm\{s\})$