${\text{CO}}_2^{}+\text{C}⟶<!--\; ⟶\; -->2\text{CO}{\text{CO}}_2^{}+\text{C}⟵<!--\; ⟵\; -->2\text{CO}{\text{CO}}_2^{}+\text{C}\stackrel{-<!--\; -\; -->\rightharpoonup <!--\; \rightharpoonup \; -->}{\leftharpoondown <!--\; \leftharpoondown \; -->-<!--\; -\; -->}2\text{CO}{\text{H}}_{}^{+}+{\text{OH}}_{}^{-<!--\; -\; -->}\stackrel{-<!--\; -\; -->\rightharpoonup <!--\; \rightharpoonup \; -->}{\leftharpoondown <!--\; \leftharpoondown \; -->}{\text{H}}_2^{}\text{O}{\text{H}}_2^{}\text{O}\stackrel{\rightharpoonup <!--\; \rightharpoonup \; -->}{\leftharpoondown <!--\; \leftharpoondown \; -->-<!--\; -\; -->}{\text{H}}_{}^{+}+{\text{OH}}_{}^{-<!--\; -\; -->}A⟷<!--\; ⟷\; -->A^{\prime }{\text{CO}}_2^{}+\text{C}\stackrel{\mathit{\alpha <!--\; \alpha \; -->}}{\to }2\text{CO}{\text{CO}}_2^{}+\text{C}\underset{\mathit{\beta <!--\; \beta \; -->}}{\overset{\mathit{\alpha <!--\; \alpha \; -->}}{\to }}2\text{CO}$