Write the reaction equations СН4 → С2Н2 → СН3СОН → С2Н5ОН → С2Н5Сl → С4Н10 ↓ СН3СООС2Н5

Let’s compose the reaction equations for organic substances:
2CH4 = C2H2 + 3H2 – cracking of methane, acetylene is released;
С2Н2 + Н2О = Н2С = СНОН = Н3С – СОН – hydration of acetylene, vinyl alcohol is formed, as an unstable compound is isomerized, the final product of the reaction is ethanal;
СН3 – СОН + Н2 = СН3 – СН2 – ОН – reduction of ethanal, ethanol is released;
CH3 – CH2 – OH + HCl = C2H5Cl + H2O – exchange, chloroethane was obtained;
2С2Н5Cl + 2Na = C4H10 + 2NaCl – Wurtz reaction, butane was formed;
C4H10 = C2H4 + C2H6 – decomposition of butane, ethylene was obtained;
C2H4 + H2O = C2H5 – OH – ethylene hydration, ethanol is released;
С2Н5 – ОН + CuO = CH3 – COH + Cu + H2O – ethanol oxidation, ethanal was obtained;
СН3СОН + Ag2O = CH3 – COOH + 2Ag – reaction of a silver mirror, acetic acid is released;
CH3 – COOH + C2H5 – OH = CH3COO – C2H5 + H2O – esterification, ethyl acetate was obtained.
These reactions confirm the connection between hydrocarbons and oxygen-containing compounds. Ethyl acetate is used as a solvent.