(1) $C_2H_4+H_2O\buildrel{{HCl}}\over\to C_2H_5OH$
(2) $C_2H_5OH+O_2\buildrel{{\text{men giấm}}}\over\to CH_3COOH+H_2O$
(3) $CH_3COOH+C_2H_5OH\buildrel{{H_2SO_4, t^o}}\over\rightleftharpoons CH_3COOC_2H_5+H_2O$
(4) $CH_3COOC_2H_5+H_2O\buildrel{{t^o}}\over\rightleftharpoons CH_3COOH+C_2H_5OH$
(5) $nC_2H_4\buildrel{{t^o, p, xt}}\over\to (-CH_2-CH_2-)_n$
(6) $C_2H_4+Br_2\to C_2H_4Br_2$
(7) $2CH_3COOC_2H_5+ Ca(OH)_2\buildrel{{t^o}}\over\to (CH_3COO)_2Ca+ 2C_2H_5OH$