Explain why each is an incorrect IUPAC name, and write the correct IUPAC name for the intended compound. (a) 1,3-Dimethylbutane (b) 4 -Methylpentane (c) 2,2-Diethylbutane (d) 2-Ethyl-3-methylpentane (e) 2-Propylpentane (f) 2,2-Diethylheptane (g) 2,2-Dimethylcyclopropane (h) 1-Ethyl-5-methylcyclohexane

(a) 1,3-Dimethylbutane (b) 4-Methylpentane (c) 2,2-Diethylbutane (d) 2-Ethyl-3-methylpentane (e) 2-Propylpentane (f) 2,2-Diethylheptane (g) 2,2-Dimethylcyclopropane (h) 1-Ethyl-5-methylcyclohexane Answer: The compounds with incorrect IUPAC names and their correct names are: (a) 1,3-Dimethylbutane - Correct name: 2,3-Dimethylbutane (b) 4-Methylpentane - Correct name: 2-Methylpentane (c) 2,2-Diethylbutane - Correct name: 3-Ethylpentane (if the intended compound has one ethyl substituent) (e) 2-Propylpentane - Correct name: 4-Methylheptane (f) 2,2-Diethylheptane - Correct name: 4,4-Diethylheptane (if the intended compound has two ethyl substituents) (g) 2,2-Dimethylcyclopropane - Correct name: 1,1-Dimethylcyclopropane (h) 1-Ethyl-5-methylcyclohexane - Correct name: 1-Ethyl-3-methylcyclohexane