Question detail
What is a homologous series in organic chemistry?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Introduction to organic chemistry
Question
- A. A group of organic compounds with the same functional group and similar chemical properties.
- B. A group of organic compounds that differ by a single carbon atom.
- C. A group of organic compounds that have the same molecular formula.
- D. A group of organic compounds that can undergo substitution reactions.
Answer
A group of organic compounds with the same functional group and similar chemical properties.
Explanation
A homologous series is defined as a group of organic compounds that share the same functional group, leading to similar chemical properties. The key difference is that functional groups are specific groups of atoms responsible for the characteristic reactions of a compound. Homologous series applies when discussing groups of compounds with a consistent structure, while functional groups apply to the specific reactive parts of those compounds. Therefore, the first option correctly identifies the nature of a homologous series.
Common mistake
Homologous Series vs Functional Groups
Students often confuse homologous series with functional groups, thinking they are the same concept.
A homologous series is a group of organic compounds that have the same functional group and similar chemical properties, differing by a constant unit (usually -CH2). A functional group is a specific group of atoms within a molecule that is responsible for the characteristic reactions of that molecule. Homologous series applies when discussing groups of compounds with similar properties, while functional groups apply when identifying reactive parts of individual molecules. Understanding this distinction helps in naming and predicting reactions of organic compounds.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.