Question

Difference beyween nucleophilic substitution and elimination

Answer 1

Nucleophilic substitution-

C2H5Cl + KOH (aq)-> C2H5OH +KCl

It can be sn1 or sn2 mechanism. One strong nucleophile (here OH-)substitute a weak nucleophile(here Cl-).

Elimination reaction-

C2H5Cl +KOH (alc)->CH2=CH2 +KCl+H2O

[Beta elimination reaction]

Hydrogen is eliminated from beta position with release of water.

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