Question 75

The hydrocarbon $$(X)$$ with molar mass $$80\,g\,mol^{-1}$$ and $$90\% $$ carbon has $$\underline{\hspace{2cm}}$$ degree of unsaturation.

Correct Answer: 3

Molar mass=80, 90% C, 10% H. C: 0.9×80/12=6, H: 0.1×80/1=8. Formula: C₆H₈.

Degree of unsaturation = (2×6+2-8)/2 = (12+2-8)/2 = 3.

The answer is 3.

Create a FREE account and get:

Download resources