Question

What will be the degree of unsaturation for a compound having molecular formula $C_4{H}_{9}ON$ ?

• A. 1
• B. 2
• C. 4
• D. 6

Answer 1

The correct option is A 1

For a compound with molecular formula $C_c{H}_h{X}_x{N}_n{O}_o$
$\text{Degree of unsaturation}=(c+1)-\frac{h}{2}-\frac{x}{2}+\frac{n}{2}$
Where, X = Halogen
c = number of carbon atoms
h = number of hydrogen atoms
n = number of nitrogen atoms
o = number of oxygen atoms
In $C_4{H}_{9}ON:$
$\text{Degree of unsaturation}=(4+1)-\frac{9}{2}+\frac{1}{2}=1$