Functional Groups: Classification of Organic Compounds · Paper 1 — Free Chemistry SL Practice Questions

A compound has a continuous chain of six carbon atoms with a chlorine substituent and a methyl substituent. Numbering from one end gives these substituents at positions 3 and 4; numbering from the other end also gives positions 3 and 4. What is the correct IUPAC name for this compound?

A straight-chain compound has the molecular formula $\text{C}_6\text{H}_{12}\text{O}_2$ and contains a carboxylic acid functional group. What is the correct IUPAC name for this compound?

Three structural isomers exist for $\text{C}_3\text{H}_6\text{Br}_2$: 1,2-dibromopropane (bp $140\ ^\circ\text{C}$), 1,3-dibromopropane, and 2,2-dibromopropane (bp $132\ ^\circ\text{C}$). Which structural formula corresponds to the isomer with the lower boiling point, and what property best explains why its boiling point is lower than that of 1,2-dibromopropane?

A straight-chain alcohol has five carbon atoms with the hydroxyl group on the second carbon from the nearest chain end. Which of the following is the correct IUPAC name for this compound?