\(\left(1\right)C+O_2\xrightarrow[t^0]{}CO_2\\ \left(2\right)CO_2+CaO\rightarrow CaCO_3\\ \left(3\right)CaCO_3\xrightarrow[t^0]{}CaO+CO_2\\ \left(4\right)CaO+3C\xrightarrow[t^0]{}CaC_2+CO\\ \left(5\right)CaC_2+2H_2O\rightarrow Ca\left(OH\right)_2+C_2H_2\\ \left(6\right)C_2H_2+2Br_2\rightarrow C_2H_2Br_4\)
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