E1 & E2 REACTION ORDER
CRITERIA -E1 - E2
Substrate-3>2>1(E1)-1>2>3(E2)
RATE OF REACTION-Depends only on the substrate(E1)-Depends both on substrate and base(E2)
Carbocation-More stable carbocation(E1)-Less stable carbo caton(E2)
Rearrangement-Rearrangements are common(E1)-No rearrangements(E2)
Geometry-No special geometry is required(E1)-Anti-coplanarity is required(E2)
Leaving group-Good leaving group(E1)-Poor leaving group(E2)
Base strength-Weak base(E1)-Strong and more concentrated base(E2)
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