1 - CH4+O2=HCOH(каталитическое окисление)
2 - HCOH+H2=CH3OH
3 - CH3OH+HCl=СH3Cl+H2O
4 - 2CH3Cl+2Na= C2H6+2NaCl
5 - C2H6= C2H4+H2
6 - C2H4+H2O=CH3CH2OH
вот и всё
1 - CH4+O2=HCOH(каталитическое окисление)
2 - HCOH+H2=CH3OH
3 - CH3OH+HCl=СH3Cl+H2O
4 - 2CH3Cl+2Na= C2H6+2NaCl
5 - C2H6= C2H4+H2
6 - C2H4+H2O=CH3CH2OH
вот и всё