Carry out the following transformations, indicate the type of reaction: C2H4-C2H5OH-aldehyde – acid-ester C2H4-C2H4Br2

Let us give the reaction equations for the transformation chain:
C2H4 + H2O = C2H5 – OH – the reaction of ethylene hydration, ethyl alcohol was formed;
C2H5OH + CuO = C2H4O + Cu + H2O – oxidation of ethanol with copper oxide, the reaction occurs when heated, ethanal (acetaldehyde) is released;
С2Н4О + Ag2O = CH3COOH + 2Ag – oxidation of ethanal with silver oxide, acetic acid was obtained;
CH3COOH + C2H5 – OH = CH3COO – C2H5 + H2O – esterification occurs with the participation of sulfuric acid, which is used as a dehydrating agent, ethyl acetate is released;
CH3COO – C2H5 + H2O = CH3COOH + C2H5OH – hydrolysis of the ether, acetic acid and ethanol are formed;
С2Н5ОН = Н2С = СН2 + Н2О – ethanol dehydration, ethylene was obtained;
Н2С = СН2 + Br2 = CH2Br – CH2Br2 – addition, dibromoethane is formed.



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