Цепочка первая)
1) t
2CH4 --------------- > C2H2 + 3H2↑
2)
HgSO4,t
3) C2H2 + H2O --------------> CH3COH
4) CH3COH + H2 ----------- > CH3-CH2-OH
5) CH3-CH2-OH + HBr ------ > CH3-CH2-Br + H2O
6) CH3-CH2-Br + KOH ----- > CH3-CH2-OH + KBr
KMnO4,t
7) CH3-CH2-OH + [O] ------------- > CH3-COOH + H2
Цепочка вторая)
1) Kt,t
CH4 + O2(возд) ------------ > HCOH + H2O
2) HCOH + H2 ------------ > CH3OH
3) CH3OH + HCl ------- > CH3Cl + H2O
4) 2CH3Cl + 2Na ------ > C2H6 + 2NaCl
5) C2H6 ------- > C2H4 + H2
C2H4 + H2O ---- > C2H5OH
KMnO4,t
6) C2H5OH + [O] ------------- > CH3-COOH + H2