Question

Double bond equivalent or degree of unsaturation in is :

• A. $12$
• B. $13$
• C. $14$
• D. $15$

Answer 1

The correct option is C $14$

Solution:

The degree of unsaturation in the analysis of the molecular formula of organic molecules is a calculation that determines the total number of rings and $\pi$ bonds.

As we know that double bond equivalent is the sum of the total number of rings present in the structure and the total number of double bonds, so Double bond equivalent of the compound = (Number of benzene rings contained + Number of double bonds in the compound).

Here in the given compound, there are 4 rings in which 9 double bonds are occupied and 1 double bond is in the structure of the functional group. So, the Double bond equivalent $=4+9+1=14$. Hence, double bond equivalent or degree of unsaturation for the compound given is 14.

Hence the correct option: C