Alkenes and _______ are compounds that contain a multiple bond each

Explanation

This question is asking to identify the compound that contains a multiple bond along with alkenes. The options given are alkanes, benzene, alkynes, and benzaldehyde.

Alkenes are compounds that contain a double bond between two carbon atoms. They have the general formula CnH2n. Examples of alkenes include ethene (C2H4), propene (C3H6), and butene (C4H8).

Alkanes are compounds that contain only single bonds between carbon atoms. They have the general formula CnH2n+2. Examples of alkanes include methane (CH4), ethane (C2H6), and propane (C3H8).

Benzene is a compound that contains a ring of six carbon atoms with alternating double bonds. Its chemical formula is C6H6.

Alkynes are compounds that contain a triple bond between two carbon atoms. They have the general formula CnH2n-2. Examples of alkynes include ethyne (C2H2), propyne (C3H4), and butyne (C4H6).

Therefore, the correct answer to this question is option C, alkynes, as they are the compounds that contain a multiple bond along with alkenes.

It is important to note that alkenes, alkynes, and benzene are all unsaturated hydrocarbons, meaning they contain double or triple bonds between carbon atoms, while alkanes are saturated hydrocarbons, meaning they only contain single bonds between carbon atoms.

Overall, understanding the differences between these types of hydrocarbons is important in organic chemistry.