Question

If the molecular formula of an organic compound is $C_{10}{H}_{18}$ it is:

• A. Alkene
• B. Alkane
• C. Alkyne
• D. Not a hydrocarbon

Answer 1

The correct option is C Alkyne

If the molecular formula of an organic compound is $C_{10}{H}_{18}$ it is alkyne. The general formula of alkyne is $C_n{H}_{2n-2}$.
If the molecular formula of an organic compound is $C_{10}{H}_{22}$ it is alkane. The general formula of alkane is $C_n{H}_{2n+2}$.
If the molecular formula of an organic compound is $C_{10}{H}_{20}$ it is alkene. The general formula of alkene is $C_n{H}_{2n}$.