$CH_2=CH_2+H_2\xrightarrow{{Ni, t^o}} CH_3-CH_3$
$CH_2=CH_2+Br_2\to CH_2Br-CH_2Br$
$CH_2=CH_2+H_2O\xrightarrow{{H_2SO_4,t^o}} C_2H_5OH$
$C_2H_5OH\xrightarrow{{H_2SO_4 đ, 170^oC}} C_2H_4+H_2O$
$2C_2H_5OH+2Na\to 2C_2H_5ONa+H_2$
$C_2H_5OH+CH_3COOH\buildrel{{H_2SO_4, t^o}}\over\rightleftharpoons CH_3COOC_2H_5+H_2O$
$2CH_3COOH+Fe\to (CH_3COO)_2Fe+H_2$
$2CH_3COOH+2Na\to 2CH_3COONa+H_2$
