Write the reaction equations: acetylene – ethanal – ethanol – ethanal – ethanic acid – methylethanoate

To solve the chain of transformations, we indicate the formulas of organic compounds:

C2H2 – CH3 – COH – CH3COOH – CH3COO – CH3
Let’s write the transformations:
С2Н2 + Н2О = Н2С = СНОН – СН3 – СОН – hydration, an intermediate product of vinyl alcohol was formed, ethanal was obtained during its isomerization;

СН3СОН + Н2 = С2Н5ОН – addition, ethanol is released;

С2Н5ОН + CuO = CH3COH + Cu + H2O – oxidation with copper oxide, ethanal was formed;

СН3СОН + Ag2O = CH3COOH + 2Ag – qualitative reaction to ethanal, ethanic acid is released;

CH3COOH + CH3OH = CH3COO – CH3 + H2O – esterification, methylethanoate (acetic acid methyl ester) was obtained.

The decision confirms the link between hydrocarbons and oxygenated organic substances.