PTHH:

$\rm (1) C_2H_5OH\xrightarrow{170^oC,H_2SO_4(đ)} C_2H_4+H_2O \\ (2) 3C_2H_4+2KMnO_4+4H_2O \to 3C_2H_4(OH)_2+2MnO_2+2KOH \\ (3) nC_2H_4(OH)_2+nC_6H_4(COOH)_2 \buildrel{{H_2SO_4(đ),t^o}}\over\rightleftharpoons (\kern-6pt-\, OC-C_6H_4-COOC_2H_4-O  \,-\kern-6pt)_n +2nH_2O \\(4) 2C_2H_5OH \xrightarrow{t^o,p,xt} CH_2=CH-CH=CH_2+H_2+H_2O \\ (5) nCH_2=CH-CH=CH_2\xrightarrow{t^o,p,xt} (\kern-6pt-\, CH_2-CH=CH-CH_2 \,-\kern-6pt)_n  \\ (6) C_2H_5OH +CuO\xrightarrow{t^o} CH_3CHO+Cu+H_2O \\ (7) CH_3CHO+2AgNO_3+3NH_3 \to CH_3COONH_4+2Ag\downarrow+2NH_4NO_3 \\(8) CH_3COONH_4+HCl\to CH_3COOH+NH_4Cl \\ (9) CH_3COOH+C_2H_4(OH)_2 \buildrel{{H_2SO_4(đ),t^o}}\over\rightleftharpoons CH_3COOC_2H_4OH+H_2O \\ (10) CH_3COOC_2H_4OH+CH_3COOH \buildrel{{H_2SO_4(đ),t^o}}\over\rightleftharpoons (CH_3COO)_2C_2H_4+H_2O$