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Arrange the fallowing alkenes in increas...

Arrange the fallowing alkenes in increasing order of their enthalpy of hydrogenation `(-DeltaH)`:

A

a. `R lt S lt Q lt P`

B

b. `R lt S lt P lt Q`

C

c. `P lt Q lt R lt S`

D

d. `P lt Q lt S lt R `

Text Solution

Verified by Experts

The correct Answer is:
A
(i) Trans isomer is more stable than cis-isomer.
(ii) More substituted alkene is more stable than less substituted alkéne.
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