Объяснение:
2CH4 -> CH=-CH + 3H2 (t)
CH=-CH + H2 -> CH2=CH2 (t, kat)
CH2=CH2 + H2O -> CH3-CH2-OH
CH3-CH2-OH -> CH2=CH2 + H2O (t, kat)
CH2=CH2 + H2 -> CH3-CH3 (t, kat)
