Ch4-c2h2-ch3cho-c2h5oh-ch3cho-ch3cooh-ch3cook
2CH4-->C2H2+3H2
C2H2+H2O-->CH3COH
CH3COH+H2-->C2H5OH
2C2H5OH+O2-->2CH3COH+2H2O
CH3COH+Ag2O-->CH3COOH+Ag
2CH3COOH+2K-->2CH3COOK+H2