3. Alkanes are a homologous series of organic compounds.

Which statement about alkanes is correct?

A. Their general formula is CnH2n.
B. Their boiling points increase as the length of the carbon chain increases.
C. They are unsaturated hydrocarbons.
D. They take part in addition reactions.



Answer :

Final answer:

Alkanes are a homologous series with the general formula CnH2n+2, and their boiling points increase with chain length.


Explanation:

Alkanes are a homologous series of organic compounds with the general formula CnH2n+2. As saturated hydrocarbons, they consist of single-bonded carbon and hydrogen atoms. The boiling points of alkanes increase as the length of the carbon chain increases due to stronger intermolecular attractions.


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