Question detail
Which of the following is a correct displayed formula for propene (CH₃CH=CH₂)?
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. CH₃–CH=CH₂
- B. CH₃–CH–CH₂
- C. CH₃–CH₂–CH₃
- D. CH₃–C≡CH
Answer
CH₃–CH=CH₂
Explanation
A displayed formula shows the connectivity and bond types. Propene has a double bond between the second and third carbons, so CH₃–CH=CH₂ is correct.
Common mistake
Misidentifying Structural Formulae
Students often confuse structural formulae with molecular formulae, thinking they represent the same information.
Remember that a structural formula shows how atoms are arranged in a molecule, while a molecular formula only indicates the number of each type of atom present. For example, C2H6 is the molecular formula for ethane, but its structural formula is CH3-CH3, showing the arrangement of atoms.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.