Make up the reaction equations: CH3 – CH3 → CH2 = CH2 → CH3 – CH2 – OH → CH3 – CH = O → CH3 – C (OH) = O → CO2

1. Dehydrogenation of ethane, catalyst Ni, t = 500 ° C.
CH3-CH3 = CH2 = CH2 + H2.
2. Hydration of ethylene in the presence of H2SO4.
CH2 = CH2 + H2O = C2H5OH.
3. Oxidation by heating in the presence of Ag catalyst.
2 C2H5OH + O2 = CH3-CHO + 2H2O.
4. Oxidation of acetaldehyde in the presence of Mn (CH3COO) 2, t = 60 ° C.
2CH3-CHO + O2 = 2CH3COOH.
5. Combustion of acetic acid.
CH3COOH + 2O2 = 2H2O + 2CO2.