сн4 -> сн3 - сн3 -> сн3-сн2-он -> сн3 -сн3

1)СН4 + Н2= СH3-CH3

2)CH3-CH3 + H20=C2H5OH

3)C2H5OH+ H2= CH3-CH3 + H20

1)СН4 + Н2 --------> СH3-CH3
 

2)CH3-CH3 + H2O -------> C2H5OH
 

3)C2H5OH+ H2 --------> CH3-CH3 + H2O