Double bond equivalents help in search for structure of a compound. It involves following steps:
Calculate the expected number of hydrogen atoms in the saturated structure.
(a) For `C_(n)` there would be: `(2n+2)` hydrogens if compound contains C,H,O only.
(b) For `C_(n),N_(m)` there would be `(2n+2+m)` hydrogens.
Subtract the actual number of hydrogen and divide by 2. This gives the double bond equivalents.
Ring is considered to possess single DBE.
Double bond equivalent of benzene will be:
A. 2
B. 3
C. 4
D. 1