Which two compounds are used to compose an alkylbenzene lubricant?

The correct answer features propylene and benzene, which are essential components in the production of alkylbenzene lubricants. Alkylbenzene lubricants are synthesized by alkylating benzene, where a long-chain alkyl group is added to the benzene ring. Propylene, being a source of the alkyl group, is crucial in this process.

The presence of benzene in this combination serves as the aromatic backbone needed for the lubricant's chemical structure. The resulting alkylbenzene molecules exhibit desirable properties such as good thermal stability and solvent characteristics, making them effective as lubricants in various applications, including refrigeration systems.

By using these two compounds, manufacturers can create lubricants that maintain their performance under high temperatures and pressures typical in refrigeration systems, contributing to overall efficiency and longevity.