Kemija - 2024./25. ljeto - 31.

A. $\mathrm{Z}\mathrm{n}(\mathrm{s})\mid {\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\backslash mathrm\{Zn\}(\backslash mathrm\{s\})\; \backslash mid\; \backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})$ $\text{¦¦}¦¦$ ${\mathrm{H}}^{+}(\mathrm{a}\mathrm{q})\mid {\mathrm{H}}_2(\mathrm{g})\mid \mathrm{Pt}(\mathrm{s})\backslash mathrm\{H\}^\{+\}(\backslash mathrm\{aq\})\backslash left|\backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{~g\})\backslash right|\; \backslash operatorname\{Pt\}(\backslash mathrm\{s\})$

B. $\mathrm{Z}\mathrm{n}(\mathrm{s})\mid {\mathrm{H}}^{+}(\mathrm{a}\mathrm{q})\backslash mathrm\{Zn\}(\backslash mathrm\{s\})\; \backslash mid\; \backslash mathrm\{H\}^\{+\}(\backslash mathrm\{aq\})$ $\text{¦¦}¦¦$ ${\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\mid {\mathrm{H}}_2(\mathrm{g})\mid \mathrm{Pt}(\mathrm{s})\backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})\backslash left|\backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{g\})\backslash right|\; \backslash operatorname\{Pt\}(\backslash mathrm\{s\})$

C. ${\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\mid \mathrm{Z}\mathrm{n}(\mathrm{s})\text{ ¦¦}{\mathrm{H}}_2(\mathrm{g})\mid {\mathrm{H}}^{+}(\mathrm{a}\mathrm{q})\mid \mathrm{Pt}(\mathrm{s})\backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})\backslash left|\backslash mathrm\{Zn\}(\backslash mathrm\{s\})\; ~¦¦\; \backslash mathrm\{~H\}\_\{2\}(\backslash mathrm\{g\})\backslash right|\; \backslash mathrm\{H\}^\{+\}(\backslash mathrm\{aq\})\; \backslash mid\; \backslash operatorname\{Pt\}(\backslash mathrm\{s\})$

D. ${\mathrm{Z}\mathrm{n}}^{2+}(\mathrm{a}\mathrm{q})\mid \mathrm{Z}\mathrm{n}(\mathrm{s})\text{ ¦¦}{\mathrm{H}}^{+}(\mathrm{a}\mathrm{q})\mid {\mathrm{H}}_2(\mathrm{g})\mid \mathrm{Pt}(\mathrm{s})\backslash mathrm\{Zn\}^\{2+\}(\backslash mathrm\{aq\})\backslash left|\backslash mathrm\{Zn\}(\backslash mathrm\{s\})\; ~¦¦\; \backslash mathrm\{~H\}^\{+\}(\backslash mathrm\{aq\})\backslash right|\; \backslash mathrm\{H\}\_\{2\}(\backslash mathrm\{g\})\; \backslash mid\; \backslash operatorname\{Pt\}(\backslash mathrm\{s\})$