CH4-->C2H2-->CH3-COH-->CH3-CH2-OH-->CH3-CH2-Br-->C2H4-->CH3-CH2-OH--->CH3-COH--->CH3-COOH--->CH3-COONa
2CH4 = C2H2 + 3H2
C2H2 + H2O = CH3COH
CH3COH + H2 = CH3-CH2-OH
CH3-CH2-OH + HBr = CH3-CH2-Br + H2O
CH3-CH2-Br + KOH -спирт-> C2H4 + KBr + H2O
C2H4 + H2O = CH3-CH2-OH
CH3-CH2-OH + CuO --> CH3-COH + Cu + H2O
CH3-COH + 2Cu(OH)2 = CH3-COOH + Cu2O + 2H2O
CH3-COOH + NaOH = CH3-COONa + H2O