Kemija - 2024. probna, 21.

A. ${\mathrm{C}\mathrm{a}\mathrm{C}\mathrm{O}}_3(\mathrm{s})\to \mathrm{C}\mathrm{a}\mathrm{O}(\mathrm{s})+{\mathrm{C}\mathrm{O}}_2(\mathrm{g})\backslash mathrm\{CaCO\}\_\{3\}(\backslash mathrm\{s\})\; \backslash rightarrow\; \backslash mathrm\{CaO\}(\backslash mathrm\{s\})+\backslash mathrm\{CO\}\_\{2\}(\backslash mathrm\{g\})$

B. $2{\mathrm{K}\mathrm{C}\mathrm{l}\mathrm{O}}_3(\mathrm{s})\to 2\mathrm{K}\mathrm{C}\mathrm{l}(\mathrm{s})+3{\mathrm{O}}_2(\mathrm{g})2\; \backslash mathrm\{~KClO\}\_\{3\}(\backslash mathrm\{s\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~KCl\}(\backslash mathrm\{s\})+3\; \backslash mathrm\{~O\}\_\{2\}(\backslash mathrm\{g\})$

C. ${\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4\cdot 5{\mathrm{H}}_2\mathrm{O}(\mathrm{s})\to {\mathrm{C}\mathrm{u}\mathrm{S}\mathrm{O}}_4(\mathrm{s})+5{\mathrm{H}}_2\mathrm{O}(\mathrm{g})\backslash mathrm\{CuSO\}\_\{4\}\; \backslash cdot\; 5\; \backslash mathrm\{~H\}\_\{2\}\; \backslash mathrm\{O\}(\backslash mathrm\{s\})\; \backslash rightarrow\; \backslash mathrm\{CuSO\}\_\{4\}(\backslash mathrm\{s\})+5\; \backslash mathrm\{~H\}\_\{2\}\; \backslash mathrm\{O\}(\backslash mathrm\{g\})$

D. $2{\mathrm{N}\mathrm{a}\mathrm{H}\mathrm{C}\mathrm{O}}_3(\mathrm{s})\to {\mathrm{N}\mathrm{a}}_2{\mathrm{C}\mathrm{O}}_3(\mathrm{s})+{\mathrm{C}\mathrm{O}}_2(\mathrm{g})+{\mathrm{H}}_2\mathrm{O}(\mathrm{g})2\; \backslash mathrm\{~NaHCO\}\_\{3\}(\backslash mathrm\{s\})\; \backslash rightarrow\; \backslash mathrm\{Na\}\_\{2\}\; \backslash mathrm\{CO\}\_\{3\}(\backslash mathrm\{s\})+\backslash mathrm\{CO\}\_\{2\}(\backslash mathrm\{g\})+\backslash mathrm\{H\}\_\{2\}\; \backslash mathrm\{O\}(\backslash mathrm\{g\})$