Kemija - 2019. ljeto, 16.

A. ${\mathrm{K}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{C}\mathrm{l}}_2(\mathrm{a}\mathrm{q})\to 2\mathrm{K}\mathrm{C}\mathrm{l}(\mathrm{s})+{\mathrm{B}\mathrm{a}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\backslash mathrm\{K\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaCl\}\_\{2\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~KCl\}(\backslash mathrm\{s\})+\backslash mathrm\{BaSO\}\_\{4\}(\backslash mathrm\{aq\})$

B. ${\mathrm{K}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{C}\mathrm{l}}_2(\mathrm{a}\mathrm{q})\to 2\mathrm{K}\mathrm{C}\mathrm{l}(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{S}\mathrm{O}}_4(\mathrm{s})\backslash mathrm\{K\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaCl\}\_\{2\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~KCl\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaSO\}\_\{4\}(\backslash mathrm\{s\})$

C. ${\mathrm{K}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{C}\mathrm{l}}_2(\mathrm{a}\mathrm{q})\to 2\mathrm{K}\mathrm{C}\mathrm{l}(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})\backslash mathrm\{K\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaCl\}\_\{2\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~KCl\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaSO\}\_\{4\}(\backslash mathrm\{aq\})$

D. ${\mathrm{K}}_2{\mathrm{S}\mathrm{O}}_4(\mathrm{a}\mathrm{q})+{\mathrm{B}\mathrm{a}\mathrm{C}\mathrm{l}}_2(\mathrm{a}\mathrm{q})\to 2\mathrm{K}\mathrm{C}\mathrm{l}(\mathrm{s})+{\mathrm{B}\mathrm{a}\mathrm{S}\mathrm{O}}_4(\mathrm{s})\backslash mathrm\{K\}\_\{2\}\; \backslash mathrm\{SO\}\_\{4\}(\backslash mathrm\{aq\})+\backslash mathrm\{BaCl\}\_\{2\}(\backslash mathrm\{aq\})\; \backslash rightarrow\; 2\; \backslash mathrm\{~KCl\}(\backslash mathrm\{s\})+\backslash mathrm\{BaSO\}\_\{4\}(\backslash mathrm\{s\})$