Write the reaction equation: CH4 → CH3Cl → C2H6 → C2H5Cl → C2H5Oh → CH3CHO → CH3COOH

Let’s carry out a chain of transformations of organic substances.

1. CH4 + CI2 = CH3CI + HCI (powerful light irradiation is used as a catalyst);

2 CH3CI + 2Na = CH3-CH3 + 2NaCI (Wurtz reaction);
CH3-CH3 + CI2 = CH3-CH2CI + HCI (powerful light irradiation is used as a catalyst);
CH3-CH2CI + NaOH = CH3-CH2OH + NaCl;
CH3-CH2OH + CuO = CH3-COH + CU + HaO;
CH3-COH + 2Cu (OH) 2 = CH3COOH + Cu2O + 2H2O (a red precipitate of copper oxide I serves as an indicator of the successful completion of the reaction).