Цепочка реакций
1) CH4+...=>C2H2
2)C2H2+...=>C2H6
3)C2H2+...=>CH3Cl
4)CaC2+...=>C2H2
5)C2H5Cl+...=>C2H5OH
6)C2H5Cl+...=>C2H4
7)C2H5OH+...=>C2H4O
8)C2H4O+...=>C2H5OH
9)C2H4+...=>C2H5OH
10)C2H4+...=>полиэтилен
11)C2H5OH+...=>C2H5-O-C2H5
12)C2H4O+...=>CH3COOH
13)CH3Cl+...=>CH3OH
14)CH3OH+...=>CH3-O-CH3
15)CH3OH+...=>C2HO
16)C2HO+...=>CH3OH
17)C2HO+...=>HCOOH
18)HCOOH+NaHCO3=>?
19)C2H6+...=>C2H5Cl

1) 2CH4-->C2H2+3H2 (1500°C)2) C2H2+2H2-->C2H6 (кат. Ni, t)3) В одну стадию тут ну никак не выйдет. Можно в три:C2H2+2,5O2-->2CO2+Н2ОСО2+3Н2-->СН3ОН+Н2ОСН3ОН+HCl-->CH3Cl+H2O4) СаС2+2Н2О-->Са(ОН)2+С2Н2↑5) C2H5Cl+KOH(H2O)-->C2H5OH+KCl6) C2H5Cl+KOH(сп.)-->С2Н4+KCl+H2O7) C2H5OH+CuO-->CH3CHO+Cu+H2O8) CH3CHO+H2-->C2H5OH (кат. Ni, t)9) C2H4+H2O-->C2H5OH (кат. H2SO4)10) nCH2=CH2-->-(CH2-CH2)-n (t, p)11) 2C2H5OH-->C2H5-O-C2H5+H2O (кат. H2SO4)12) CH3CHO+Ag2O(NH3)-->CH3COOH+2Ag↓13) CH3Cl+KOH(H2O)-->CH3OH+KCl 14) 2CH3OH-->CH3-O-CH3+H2O15) CH3OH+CuO-->HCHO+Cu+H2O16) HCHO+H2-->CH3OH (кат. Ni, t)17) HCHO+Ag2O(NH3)-->HCOOH+2Ag↓18) HCOOH+NaHCO3-->HCOONa+H2O+CO2↑19) C2H6+Cl2-->C2H5Cl (hv)