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IgorLugansk [536]
3 years ago
10

If isomerization requires breaking the pi bond, what minimum energy is required for isomerization in j/mol?

Physics
1 answer:
aliina [53]3 years ago
6 0
<span>The minimum energy required for isomerization is 267 000 J/mol 
</span>

The isomerization of cis-but-2-ene to trans-but-2-ene requires breaking of the π bond.

The bond energy of a C-C σ bond is 347 kJ/mol.

The bond energy of a C=C double bond (σ + π) is 614 kJ/mol.

So the bond energy of a π bond is (614 – 347) kJ/mol = 267 kJ/mol =
267 000 J/mol.

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