Identify a statement that is true of the hydroxyl functional groups in 1,2,3-propanetriol.
A) Two hydroxyl groups are bonded to two 1° carbons, and the third hydroxyl group is bonded to a 3° carbon.
B) Two hydroxyl groups are bonded to two 2° carbons, and the third hydroxyl group is bonded to a 3° carbon.
C) Two hydroxyl groups are bonded to two 3° carbons, and the third hydroxyl group is bonded to a 2° carbon.
D) Two hydroxyl groups are bonded to two 1° carbons, and the third hydroxyl group is bonded to a 2° carbon.

Question

Quizplus · Accepted Answer

The compound 1,2,3-propanetriol (also known as glycerol) has three hydroxyl functional groups (-OH) attached to three carbons in a linear arrangement. Two of the hydroxyl groups are attached to primary (1°) carbons, and the third hydroxyl group is attached to a secondary (2°) carbon. Therefore, the correct answer is D, "Two hydroxyl groups are bonded to two 1° carbons, and the third hydroxyl group is bonded to a 2° carbon."

Identify a Statement That Is True of the Hydroxyl Functional