Kemija - 2010./11. ljeto - 33.

A. $3\mathrm{A}+\mathrm{C}\to 2\mathrm{B}3\; ~\backslash mathrm\{A\}+\backslash mathrm\{C\}\; \backslash rightarrow\; 2\; ~\backslash mathrm\{B\}$

B. $2 \mathrm{~B} \rightarrow 3 \mathrm{~A}+\mathrm{C}$

C. $\mathrm{A}+3\mathrm{C}\to 2\mathrm{B}\backslash mathrm\{A\}+3\; ~\backslash mathrm\{C\}\; \backslash rightarrow\; 2\; ~\backslash mathrm\{B\}$