ANS given is : b < c < a .
Indicate the bond energies of C-H bonds indicated by a, b ,c in ascending order.
Please give reasons.
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UP 0 DOWN 0 0 10
10 Answers
Bond Hydrocarbon radical Bond Dissociation Energy (kcal/mole)
CH3-H Methyl 103
CH2=CH-H vinyl 112
CH2=CHCH2-H Allyl 88
http://en.wikipedia.org/wiki/Carbon-hydrogen_bond
bond dissociation energy of methyl is always greater than the allyl group..
and obviously c has highest ..
so b<c<a is true
Can someone please give the reason why this is so that B-E of methyl > allyl > vinyl ??????
aveek.. u try reasoning out dude... the ease of removal of hydrogen...
then u can get the asnwer yourself :)
http://targetiit.com/iit-jee-forum/posts/ohh-god-organic-x-14844.html
i think u and subhomoy are using the same book, and having the same doubts! :P