С2Н6=С2Н4+Н2С2Н4+Н2О=СН3-СН2-ОНСН3-СН2-ОН+CuO=CH3-COH+Cu+H2OCH3-COH+Ag2O=CH3-COOH+2AgCH3-COOH+C2H5OH=CH3-COOC2H5+H2O