②-OH
③不能
④-CHO
⑤-COOH
⑥
二、①CH≡CH+H2Ni△CH2===CH2
②CH2===CH2+H2Ni△C2H6
③C2H6+X2\s\up8(光(光)C2H5X+HX
④C2H5X+NaOH醇△CH2===CH2↑+NaX+H2O
⑤CH2===CH2+HX\s\up8(催化剂(催化剂)C2H5X
⑥CH2===CH2+H2O\s\up8(催化剂(催化剂)C2H5OH
⑦C2H5OH浓硫酸170 ℃CH2===CH2↑+H2O
⑧C2H5X+NaOH水△C2H5OH+NaX
⑨C2H5OH+HX\s\up8(△(△)C2H5X+H2O
⑩2C2H5OH+O2Cu△2CH3CHO+2H2O
⑪CH3CHO+H2Ni△C2H5OH
⑫2CH3CHO+O2\s\up8(△(△)2CH3COOH
⑬CH3COOC2H5+H2O稀硫酸△CH3COOH+C2H5OH
⑭CH3COOH+C2H5OH稀硫酸△CH3COOC2H5+H2O
⑮CH3COOC2H5+NaOH\s\up8(△(△)CH3COONa+C2H5OH
⑯CH3COONa+HCl―→CH3COOH+NaCl