wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Which of the following will produce the highest heat when 1.0 mole of each is hydrogenated in presence of Ni catalyst?
I:CH2=CH2
II:CH3CH=CH2
III:(CH3)2C=CHCH3
IV:CH3CCCH3
V:CH2=CHCH=CH2

A
I
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
II
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
III
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
IV
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D III
The stability of alkene can be determined by measuring the amount of energy associated with the hydrogenation of the molecule. Since the double bond is breaking in this reaction, the energy released in hydrogenation is proportional to the energy in the double bond of the molecule. Stability is simply a measure of energy. Lower energy molecules are more stable than higher energy molecules. More substituted alkenes are more stable than less substituted ones due to hyperconjugation. They have a lower heat of hydrogenation. The following illustrates the stability of alkenes with various substituents: V<I<II<IV<III

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Alkenes - Physical Properties
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon