Question

somebody describe the hydrogenation of Ethylene

Answer 1

CH2=CH2 + H2 gives CH3-CH3
Bond between hydrogen breaks, π bond breaks
2 bonds between C and H are formed

Answer 2

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The balanced chemical equation for the hydrogenation of ethylene is:
C2H4 + H2 → C2H6
This mechanism has been proposed: (H⋅ is a hydrogen atom with its one, unpaired electron)
Step (i) fast, equilibrium H2 ⇔ 2 H⋅
Step (ii) slow C2H4 + H⋅ → C2H5
Step (iii) fast C2H5 + H⋅ → C2H6


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