CH4 + Cl2 -> CH3Cl + HClCH3Cl + NaOH -> CH3OH + NaClCH3OH + H2 -> CH3CH3 + H2OCH3CH3 + Br2 -> CH3CH2Br + HBr
CH4 + Cl2 -> CH3Cl + HCl
CH3Cl + NaOH -> CH3OH + NaCl
CH3OH + H2 -> CH3CH3 + H2O
CH3CH3 + Br2 -> CH3CH2Br + HBr