Write the reaction equation: CH4 —- H-C = O-H — C6H12O6 —- CH3-CH2OH– CH3-COOH – CH4

Let’s write the equations:
CH4 + Cl2 = CH3Cl + HCl – chlorination reaction;
CH3Cl + KOH = CH3OH + KCl – exchange, methanol was obtained;
CH3OH + CuO = CH2O + Cu2O + H2O – oxidation, methanal was formed;
6CH2O = C6H12O6 – addition, glucose was formed;
С6Н12О6 = (enzymes) = 2С2Н5ОН + 2СО2 – alcoholic fermentation, ethanol is obtained;
С2Н5ОН + СuO = C2H4O + Cu2O + H2O – oxidation, acetaldehyde was released;
C2H4O + Ag2O = CH3COOH + 2Ag;
CH3COOH + NaOH = CH3COONa + H2O – exchange;
CH3COONa + NaOH = Na2CO3 + CH4 – exchange, methane was obtained.
These reactions confirm the connection between alkanes, aldehydes, carbohydrates, carboxylic alcohols.