Question Video: Determining Which Chemical Structure is a Tertiary Monohydric Alcohol | Nagwa Question Video: Determining Which Chemical Structure is a Tertiary Monohydric Alcohol | Nagwa

Question Video: Determining Which Chemical Structure is a Tertiary Monohydric Alcohol Chemistry • Third Year of Secondary School

Which of the following is considered a tertiary monohydric alcohol? [A] Option A [B] Option B [C] Option C [D] Option D

02:54

Video Transcript

Which of the following is considered a tertiary monohydric alcohol?

To determine the correct answer, let’s discuss the definition for each of the three main terms mentioned in the question. First off, an alcohol is defined as an organic compound that contains a hydroxy functional group signified by the chemical formula OH that is covalently bonded to a saturated carbon atom, or a carbon atom that is only singly bonded to other carbon and/or hydrogen atoms. Looking at the answer choices, each chemical structure demonstrates one OH group within the molecule that is bonded to a saturated carbon atom. This not only classifies them all as alcohols, but based on the definition of a monohydric alcohol being an alcohol that contains one hydroxy group or one OH group, they are all also classified as monohydric alcohols.

After defining two of the three terms listed in the question, none of the answer choices can be eliminated at this time. The last term we need to take a look at is the term tertiary in reference to a monohydric alcohol. A tertiary alcohol is defined as a hydroxy group that is bonded to a carbon atom with three alkyl substituents. Looking at answer choice (B), we can see the hydroxy group is bonded to a carbon atom with one alkyl substituent and two hydrogen atoms. Therefore, we can eliminate answer choice (B) because this chemical structure would be classified as a primary monohydric alcohol, with a primary alcohol being defined as a hydroxy group bonded to a carbon atom with one alkyl substituent.

Taking a look at answer choices (A) and (C), the hydroxy group in each molecule is bonded to a carbon atom that is bonded to two alkyl substituents and one hydrogen atom. Therefore, we can eliminate answer choices (A) and (C) because their chemical structures would be classified as secondary monohydric alcohols, with a secondary alcohol being defined as a hydroxy group bonded to a carbon atom with two alkyl substituents. Taking a look at answer choice (D), we can see the hydroxy group is bonded to a carbon atom with three alkyl substituents, which matches the definition for a tertiary alcohol. This classifies the chemical structure as a tertiary monohydric alcohol, making answer choice (D) the correct answer. Therefore, which of the following is considered a tertiary monohydric alcohol? The answer is option (D).

Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

  • Interactive Sessions
  • Chat & Messaging
  • Realistic Exam Questions

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy