Write down the reaction equation: CaC2 -> C2H2 -> CH3COH -> CH3CH2OH.

First reaction. To obtain acetylene from potassium carbide, it is necessary to add water to the starting material:

CaC2 + 2H2O -> Ca (OH) 2 + C2H2.

Second reaction. To obtain ethanal from acetylene, it is necessary to carry out a hydration reaction of the starting material:

C2H2 + H2O -> CH3COH.

This reaction takes place in the presence of mercury salts.

Third reaction. To obtain alcohol ethanol from ethanal, it is necessary for hydrogen to react with the starting material:

CH3COH + H2 -> CH3CH2OH.

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