осуществить превращения CH3I->C2H6->C2H4->C2H5OH
2CH3Cl + 2Na = C2H6 + 2NaCl C2H6 = C2H4 + H2 C2H4 + H20 = C2H5OH
H3CI+Na=H3C+CH3+Na C2H6=C2H4+H2 C2H4+H2O=HO+CH2+CH3