Instructions: Refer to the structure of 3-methylbutan-2-one below to answer the following question(s).
-Refer to instructions. What is the splitting pattern for the hydrogens in 3-methylbutan-2-one labeled A, B, and C, respectively?

Question

Instructions: Refer to the structure of 3-methylbutan-2-one below to answer the following question(s). 
-Refer to instructions. What is the splitting pattern for the hydrogens in 3-methylbutan-2-one labeled A, B, and C, respectively?

Quizplus · Accepted Answer

The hydrogen labeled A is attached to a methyl group, which is a singlet. The hydrogen labeled B is attached to a methylene group, which will experience splitting by the two equivalent hydrogens on the adjacent carbon, resulting in a septet. Finally, the hydrogen labeled C is attached to the carbonyl group, which is a doublet. Therefore, the splitting pattern for the hydrogens in 3-methylbutan-2-one labeled A, B, and C respectively is singlet, septet, doublet, making choice C the best answer.

Instructions: Refer to the Structure of 3-Methylbutan-2-One Below to Answer